Some standard content:
GB/T17834-1999
This standard was formulated with reference to the International Hydrographic Organization (IHO)'s "IHO Chart Specifications and THO International Chart Regulations" (2nd Edition, 1992) and GB12320-1998 China Nautical Chart Compilation Specifications". This standard was formulated in accordance with GB/T1.1--1993 Guidelines for Standardization Work Unit 1: Rules for Drafting and Presentation of Standards Part 1: Basic Provisions for Standard Compilation.
This standard is used in conjunction with GB12319-1998 China Nautical Chart Format. This standard shall be implemented from April 1, 2000. All submarine topographic maps published from April 1, 2000 shall comply with the provisions and requirements of this standard.
Appendix A and Appendix B of this standard are appendices to the standard. This standard was proposed by the Navy Headquarters.
This standard is under the jurisdiction of the Navigation Assurance Department of the Navy Headquarters. This standard was drafted by the Navy Press. The main drafters of this standard are Fan Youpan, Yu Yuantong, Wang Jie, Li Jinjie, Guan Jianjun, Yue Fenglin, and Yuan Jiansheng. This standard is entrusted to the Navigation Assurance Department of the Navy Command for interpretation. Scope
National Standard of the People's Republic of China
Specifications for Bathymetric charts
Specifications for Bathymetric chartsGB/T17834—1999
This standard specifies the mathematical basis, editing design, operation methods and accuracy of reduced bathymetric maps, the compilation and drawing of various elements, and the preparation and update of printing and publication of bathymetric maps.
This standard is applicable to the compilation of bathymetric maps of various scales. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards. GB12319—1998 Chinese Nautical Chart Format
GB/T14477—1993 Nautical Chart Printing Template
3 Definitions
This standard adopts the following definitions:
Submarine topographic map
A nautical chart that uses isobaths to represent the undulation of the seabed and shows in detail artificial features such as seabed bottom, reefs, seabed lines, and other basic geographical elements.
4 Requirements
4.1 The mapping accuracy must meet the accuracy requirements specified in Chapter 7. 4.2 It should be up-to-date and the mapping data should use the latest survey results or mapping data. 4.3 The seabed topography is represented by isobaths as the main method and characteristic water depth as the auxiliary method. 5 Mathematical basis, division of sections, and contraction
5.1 Mathematical basis
5.1.1 Coordinate system
5.1.1.1 The WGS-84 world geodetic coordinate system is used. If the data adopts other coordinate systems, the coordinate system should be converted when compiling maps with a scale greater than 11 million.
5.1.1.2 The name of the coordinate system should be noted on maps with a scale greater than 1 to 1 million. 5.1.1.31: The name of the coordinate system and its related explanations are not noted on maps with a scale of 1 million or less. *5.1.2 Scale
The basic scales of submarine topographic maps are 1.15 million, 1.25 million, and 1:1 million. Maps of other non-basic scales can also be produced as needed.
5.1.3 Projection
Approved by the State Administration of Quality Supervision, Inspection and Quarantine on August 24, 1999 and implemented on April 1, 2000
GB/T 17834—1999
5.1.3.11: Mercator projection is used for maps with a scale of 250,000 or less. The basic scale map adopts the unified datum latitude of 30°, and the non-basic scale map adopts the center latitude of the mapping area as the datum latitude. The datum latitude is taken to the whole degree or whole minute. 5.1.3.2 Lambert Conformal Conic Projection (Lamborghetti Conformal Conic Projection) is used for maps with a scale greater than 1.25 million. The provisions for selecting double standard latitudes are as follows:
a) 1.15 million maps uniformly select standard latitudes according to the latitude interval. The two latitudes at 20 degrees from the north and south seats in the 1:250,000 map are used as the standard latitudes for all 150,000 maps in the map.
b) Non-basic scale maps select two standard latitudes in the mapping area on the basis of keeping the absolute value of the maximum length deformation of the projection basically equal:
c) The standard latitude is taken to the whole degree or whole minute.
5.1.4 Depth basic calculation
5.1.4.1 The depth datum of China's coastal areas adopts the theoretical lowest tide level. When using mapping data with other depth datums, they should be recalculated. If there is no depth datum recalculation data, the original data shall be used. 5.1.4.2 The depth datum of the original data shall be used in all offshore foreign waters. 5.1.4.3 On maps of various scales, only the depth measurement unit shall be noted, and the name of the depth datum and its related explanations shall not be noted. 5. 1. 4.4 The depth measurement unit is meter.
5.1.5 Elevation base
5.1.5.1 China's coastal areas generally use the "1985 National Elevation Datum" or the local average sea level as the elevation datum, while foreign areas use the elevation datum of the original data.
5.1.5.2 On maps of various scales, only the measurement unit of elevation is noted, and the name of the elevation datum is not noted. 5-1.5.3 The unit of elevation measurement is meter.
5.2 Framing
5.2.1 Maps of various scales are divided by longitude and latitude. The basic scale map is divided based on the 11 million map. 5.2.21: Framing of 100 square maps: Starting from the 0° longitude, it is divided into 36 columns at intervals of 10° longitude difference to the east, and from the equator to the north and rain latitude 60°, it is divided into 10 rows at intervals of 6° latitude difference. The range of each map is 10° longitude difference and 6". 5.2.31: 250,000 map division: Each 1:1 million map is divided into 1 row and 4 columns, a total of 16 1:250,000 maps, the range of each map is longitude difference *3, latitude difference 1°30.
5.2.4 150,000 map division: Each 1*250,000 map is divided into 5 rows and 5 columns, a total of 25 bats 1+50,000 maps, the range of each map is longitude difference 30, latitude difference 18°.
5.2.5 The longitude and latitude differences, number of rows and columns and number of maps of basic scale maps are shown in Table 1. Table 1
Map range
Row and column quantity relationship
Map effect quantity relationship
1 +1 000 000
1: 250 000
11 50 000
5.2.6 The division of non-basic scale maps shall be determined according to the size of the mapping area and the scale of the map. In principle, each map in a set of maps shall be divided according to the same longitude and latitude differences.
5.2.7 The map specifications are generally based on full-sheet maps. 5.3 National map numbering
GB/T 17834 —1999
The numbering is based on the Arabic numeral prefixed with the English letter B (the first letter of the \Bathymetric chart\). If the mapping area is located in the southern hemisphere, S (south latitudals) is added after the numbering. See Appendix A for map sheet numbering:
6 Editing and design
6.1 Contents of editing and design work
In addition to determining the mathematical basis, classification, numbering, etc. of the new map according to the provisions of Chapter 5, the editing and design work also includes the following contents:
a) Research on the mapping area:
b) Analysis and selection of mapping data;
c) Determination of map configuration;
d) Preparation of map sheet editing plan.
6. 2 Research on the mapping area
6. 2. 1 The research on the mapping area is usually based on data analysis, based on basic data, and referring to various current data and textual data to understand the various phenomena and characteristics in the mapping area and their relationships, so as to better reflect them in the map. 6-2.2 Main contents of regional research for cartography: a) Nature and shape of the wetland, nature and undulating form of the dry beach, and basic forms of coastal landforms; b) Types and distribution of submarine landforms, and the direction of submarine ridges and trenches; c) Changes and current status of ancient river channels in estuary areas; d) Location and direction of national boundaries, territorial waters, etc. 6.3 Collection, analysis and selection of cartographic data 6.3.1 The editor should fully understand the data situation of the mapping area and collect various latest survey data, mapping data and text data. The main data are:
a) Control data: including the results of various control points; b) Sea survey data: including water depth, coastal topography data, scanning data and results appraisal measured by the hydrographic survey team and professional survey team; =) Mapping data: including various maps, sea charts, seabed topographic maps, atlases, sea charts, etc.; d) Other data: including various aerial photos, satellite photos and various text data. 6.3.2 The collected data should be comprehensively analyzed and compared, and the basic data, supplementary data and reference data that can be used for mapping should be determined, and the scope and content of use should be determined.
6.3. 3 The latest survey disk data or mapping data that is twice the scale of the reduction should be selected as the basic data for the sea area. If there are latest fish survey data or mapping data that is twice the scale of the compilation in the same area, and the terrain changes are large, this data should be used first. 6.3.4 For land, the latest topographic maps with the same or similar scale are generally selected as basic data. 6.4 Map configuration
6.4.1 Each map should be equipped with title content such as map name, number, scale, projection description, data adoption deadline, publishing agency, etc. outside the map gallery.
6.4.2 The title content should be annotated in English.
6,4.3 For basic scale maps, the map names are uniformly named after the sea area name, such as "East China Sea Dushidi Topographic Map". 6.4.4 For non-basic scale maps, the names are named after the geographical area they represent, such as "Pearl River Estuary Seabed Topographic Map". 6.5 Gallery decoration
See Appendix B.
6.6 Map sheet editing plan and filling in the map calendar 6.6.1 Cartographic editing should formulate a map sheet editing plan in accordance with the provisions of this specification and in combination with the specific conditions of the map sheet, and fill it in the map calendar, and implement it after approval by the relevant business departments.
6.6.2 Basic contents of the map sheet editing plan: a) Geographical overview of the mapping area;
b) Basic situation of the mapping data;
GB/T 17834—1999
c) The degree, scope and order of use of various cartographic materials; d) Compilation and drawing methods, specific requirements and precautions for cartographic synthesis. 6.6.3 The map calendar is a technical file that records the mapping process. It must be filled in in detail, accurately and realistically. The person filling in each column must be named. 7 Compilation and drawing methods and details
7.1 Compilation and drawing methods
According to current production conditions, technical equipment and publishing requirements, the compilation and drawing of seabed topographic maps can adopt the following methods: a) Compilation method: First, make the compilation on the film. Draw the original map, and then use the engraving method to make the printed source map. According to the map size and mapping data, one-plate engraving or multiple-plate engraving can be adopted:
b) Joint editing and engraving method: On the same film, editing and engraving are completed at one time, and the result is the printed original map;) Computer editing method: The map data obtained by various methods are input into the computer, and the data processing and editing operations are performed on the computer, and then the printing plate film or printing plate is output through the output device. 7.2 Calculation and display of mathematical foundations
7.2.1 Calculation and display of map boxes, longitude and latitude maps, and straight line scales The number should be able to ensure the mapping accuracy and facilitate average subdivision. The intersection points of the longitude and latitude lines that need to be shown on the map with the internal map screen lines must be calculated and displayed. The editing film used for engraving operations should calculate and display the intersection points of the diagonals of the internal map gallery.
7.2.2 The control points used for coordinate conversion and transfer data must be calculated and plotted. 7.2.3 The accuracy requirements for display:
a) The point error of the morning point shall not exceed 0.1mm; b) The error of the map side length, the map distance between the service points displayed according to the interval value on the map outline, the distance from the control point to the map gallery and the height of the Gaussian grid map No more than 0.2mm;
c) The error of the diagonal length of the drawing shall not exceed 0.3mmrn. 7.3 Processing and transfer of mapping data
7.3.1 Addition of mapping data
The measurement plate result plate or circle data as the basic mapping data should be processed according to the specific situation before copying to meet the copying and transfer requirements.
7.3.1.1 When the control network of the data is inconsistent with the original drawing, or the control network on the data is too large to be transferred, the control network should be added to the mapping data. When adding, pay attention to the projection properties of the data and the shape characteristics of the control network, and do not connect the curved and broken lines into straight lines.
7.3.1.2 When the scale of the mapping data is more than 3 times the scale of the reduction, an intermediate original map should be made first. The methods are: a) Transparent material marking method: When the data elements are relatively simple, use transparent materials to cover the data, and draw the key items required for the new map according to the line symbols enlarged at a certain scale, and then copy them at a reduced scale after a comprehensive inspection; b) Blueprint compilation method: When the data elements are relatively complex, first copy and reduce the data at an appropriate transitional scale, compile the blueprint, and then copy and reduce it according to the compilation scale. 7.3.1.3 When using the computer compilation method, regardless of the scale of the mapping data, it can be directly digitized. 7.3.2 Re-drawing of Cartographic Data
7.3.2.1 Commonly used re-drawing methods and requirements for basic data: a) Blueprint mosaic method: After mosaicking, it is required that there is no overlap, cracks are no larger than 0.2mm, and the error of control points and intersections of the cartographic network does not exceed 0.1mm. The straight line deformation vector length does not exceed 0.2mm; b) Case ester film film drawing method: Its re-drawing accuracy requirements are basically the same as those of the blueprint mosaic method; GB/T178341999
c) Graphic digitization method: The data graphics are required to be clear and small in deformation, and the straight line deformation vector length does not exceed 0.2mm. 7.3.2.2 Re-drawing of small area supplementary data, generally scale the data to the reduction scale first, and then copy it to the original drawing. 7.3.2.3 Requirements for the connection of adjacent maps: 1a) The edge of the joint must be connected to the adjacent map, and the gap between the edges should be 15-20 mm so that it can be reversely connected with the adjacent elements. The difference between the joints should be within 0.5 mm. The editor can modify the connection on the map reasonably; b) The connection of each element should be reasonable, natural and coordinated, and cannot be rigidly spliced, especially the connection of various linear elements. No broken lines that do not conform to the actual shape should occur;
) When using computer reduction method, the full connection should be accurate. 8 Drawing of various elements
8.1 Control points, elevation points and land features 8.1.1 Control points and elevation points
8.1.1.1 When compiling maps using survey data, select 1 to 3 control points within the range of 100 mm×100 mm on the map, and calculate and develop the points as a basis for checking the accuracy of the data and transferring the data. 8.1.1.2 On maps of various scales, indicate control points and elevation points of higher levels; control points in mainland China are not differentiated by level and are all indicated by elevation point symbols; control points in Hong Kong, Macao, Taiwan and foreign regions are indicated by data. 8.1.1.3 For elevations less than 10 m, the annotations shall be accurate to 0.1 m; for elevations greater than 10 m, the annotations shall be integer meters + decimals shall be omitted. 8.1.1.4 When control points or elevation points located on dry beaches are not indicated, land features shall be retained. 8.1.1.5 When the elevation data of the land features are inconsistent due to the use of different versions of topographic maps, the latest measurement shall prevail. The elevation data of marine elements, such as small islands and reefs, shall be based on marine survey data, and the latest measurement shall prevail at different survey times. 8.1.2 Land features
8. 1.2,1 On maps with a scale greater than 1:250,000, prominent buildings, chimneys, monuments, pagodas, water towers, forts, TV towers, etc. shall be indicated.
8-1-2-2 On maps with a scale of 1.5 million or less, land features are generally not indicated. 8.1.2.3 Land features shall be indicated by symbols. If there is no corresponding symbol, it can be indicated by a functional symbol plus a category name. 8.2 Landforms and Water Systems
8.2.1 Landforms
8-2.1.1 Landforms are generally represented by contour lines on maps of various scales. 8.2.1.2 For maps of basic scales, the basic contour intervals are specified in Table 2. Table 2
Scale
1 = 5 000
1 2 50 000
1:1 000 000
Basic contour interval, rm
Below 2 000 m 200 2 000 m and above 500
8.2.1.3 For maps of non-basic scales, the basic contour intervals shall be enlarged by 1 to 2 times the contour intervals of topographic maps of the same (similar) scale. 8.2.T.4 When the basic contour interval cannot fully display the hills and highlands in the flat areas along the reservoir, half-interval contour lines can be added. 8-2.2 Other landform elements
8.2.2.1 On maps with a scale greater than 1.25 million, the following landform elements along the coast are indicated: a) sandy land, rock peaks, independent rocks, and volcanic craters; b) lava flows and glaciers with an area greater than 200 Ⅱ m on the map; c) rocky mountains and steep cliffs with a length greater than 10 mm on the map. 8.2.2.2 On maps with a scale of 1.25 million or less, the above landform elements are not indicated. 8.2.3 Water system
GB/T17834—1999
8.2.3.1 On maps of various scales, larger rivers that connect to the sea and rivers that serve as national borders, as well as larger canals, canals, tidal marshes, salt pans with an area greater than 100 mm on the map, and swamps with an area greater than 600 mm on the map are indicated. 8.2.3.2 For rivers with a width of more than 0.4 mm, double lines shall be drawn; for rivers with a width of less than 0.4 mm, single lines shall be drawn. Practice: For rivers represented by single lines, the lines shall gradually increase in thickness from the source to the mouth.
8.3 Settlements
8-3-1 Selection of Settlements
8.3.1.1 For maps with a scale greater than or equal to 1:250,000, select settlements above county level and important villages. 8.3.1.2 For maps with a scale less than 1:250,000, select settlements above county level and important port towns. 8.3.1.3 Foreign settlements are generally represented by original data of the same or similar scale. 8.3.2 Representation of Settlements
8.3.2.1 For maps with a scale greater than 1:25, settlements shall be represented in proportion. 8.3.2.2 On maps with a scale of 1:250,000 to 1:990,000, settlements above the county level are shown in proportion, and others are shown with graphic symbols. 8.3.2.3
3 On maps with a scale of 1*1 million, settlements above the city level (excluding county-level cities) are shown in proportion, and others are shown with graphic symbols. 8.3.2.4 On maps with a scale less than 1:1 million, the capital is shown in proportion, and other settlements are shown with graphic symbols. B.3.2.5 For settlements in foreign regions, the capital is shown in proportion, and other settlements are shown in accordance with the above provisions. When the administrative level cannot be ascertained, it is generally shown according to the original data of the same scale. 8.4 Other land features and boundaries
8.4.1 Roads
8.4.1.1 On maps of this scale, existing railways are shown, regardless of whether they are single-track or double-track. 8.4.1.2 The main roads in coastal areas shall be shown on maps of various scales, distinguishing between expressways and ordinary roads. 8.4.2 Bridges
When the roads shown on the map cross the rivers shown according to the scale, the bridges shall be shown. 8.4.3 Boundaries
8.4.3.1 On maps with a scale of less than 1.25 million, the national borders of China shall be shown; on maps showing national borders, the full name of China shall be noted.
8.4.3.21: On maps with a scale of 250,000 or larger, national borders shall not be shown. 8.4.3.3 After the compilation and drawing of all maps involving national borders, proofs shall be made and submitted for approval in accordance with relevant regulations. 8.4.3.4 Foreign national borders shall not be shown.
8.4.4 Others
8.4.4.1 On maps of various scales, the Great Wall shall be shown, but other city walls shall not be shown. 8.4.4.2 The Tropic of Cancer and its annotations shall be indicated on maps of various scales. 8.5 Coastline and Islands
8.5.1 Coastline
8.5.1.1 The coastline shall be indicated in detail and accurately on maps of various scales. The simplification of the coastline shall follow the principle of enlarging the land and reducing the sea area, while maintaining the accurate position of the main feature points and reflecting the degree of its natural curvature. The curvatures with a straightness less than 0.5nII on the map shall be generalized. For protruding corners, mouths, heads, etc., their original features shall be correctly maintained and may be exaggerated when it is difficult to express. 8.5.1.2 On maps of 1:250,000 and larger scales, the measured coastline and the sketched coastline shall be distinguished, and the nature of the coastline shall be distinguished. On maps of other scales, the measured coastline shall be used for representation without distinguishing the nature of the sea barriers. 8.5.1.3 The coastline of rivers connecting to the sea shall be represented by the coastline in areas with isobaths: the other areas shall be represented by the river coastline. The connection between the coastline and the river coastline should be natural.
8.5.2 Coastal properties
In mainland China, five types of coastline properties are indicated: sandy coast, rocky coast, circle coast and tree coast. Sea coast should also be indicated. In foreign countries, the coastline properties are indicated according to the original data. The comprehensive indicators of coastline properties on maps of various scales are as follows: a) On maps with a scale greater than 1:250,000, steep coasts longer than 5 mm and other coasts and seawalls longer than 10 mm are indicated; b) On maps with a scale of 1:250,000, strong coasts longer than 5 mm are indicated, and other coastline properties are not indicated. c) On maps with a scale less than 1:250,000, the coastline properties are not indicated. 8.5.3 Islands
B.5.3-1 On maps with various scales, the coastline of islands is indicated in the same way as the coastline of the mainland. When the area is reduced and cannot be shown in proportion, it shall be shown as a dot with a diameter of 0.4mm. The direction and shape of the island shall be kept close to the original shape. 8.5.3.2 On maps of various scales, isolated small islands shall not be discarded regardless of their size. As shown in the figure, small islands with an area less than 0.3mm shall be exaggerated. When enlarged, their basic shape shall be kept and shown as a closed curve with a diameter of 0.6mm. 8.5.3.3 For the integration of clustered small islands, special attention shall be paid to their appearance, direction and arrangement rules. After the scale is reduced, some small islands may be appropriately discarded, but two or more small islands shall not be combined into one. 8.5.3.4 All islands used as base points of the territorial sea shall be shown in full. 8.6 Beaches
8.6.1 Rocky beaches and tidal flats shall be drawn with corresponding symbols. Other dry beaches shall be shown with fine solid cuts to indicate their scope and distinguish their nature, but not their height. 8.62 For the beaches outside the shoreline, if the length is shorter than 5mm and the width is narrower than 2mm on the maps of various scales, they can generally be discarded. However, the rocky beaches and coral beaches at the mouth of Jiajiao Waterway shall not be discarded on the maps with a scale greater than 1:25. If necessary, they can be enlarged. 8.6.3 The isolated beaches shall generally not be discarded. When the diameter is less than 2mm on the maps of various scales, the rocky beaches and coral beaches shall be changed to dry reef symbols, and other beaches may be appropriately enlarged. 8.6.4 If the distance between the same soft beaches (mud beaches, sand dunes, etc.) or the same hard beaches (rocky beaches, coral dunes) on the maps is less than 1mm, they can be combined and represented, and the larger area shall be represented. Double beaches shall be represented according to the nature of the side facing the sea. 8.6.5 The nature of beaches in mainland China is divided into six categories: sandy beaches, muddy beaches, rocky beaches, coral beaches, and tree beaches. 8-6-6 The nature of beaches in foreign regions shall be represented in detail according to the original data. If the rocky beach and coral beach are unclear in the source data, they shall be expressed as rocky beaches; if the sandy beach and muddy beach are unclear, they shall be expressed as sandy beaches. 87 Water depth
8.7.1 Mainly express the water depth points with characteristic significance, so as to reflect the shallowest point of the uplifted sea ridge and seamount and the deepest point of the sea basin, trench and trough, as well as the water depth of the slope inflection point with a sharp slope change.
8.7.2 When using new water depth data, the shallow water depth points on the published nautical charts shall be checked according to the results of the survey data. If there is a conclusion, it shall be handled according to the conclusion. If there is no conclusion, it shall be analyzed whether it is an ordinary shallow water depth or a special water depth. If it is an ordinary water depth, it shall be expressed. If it is a special water depth such as reported, suspected, etc., it shall not be expressed.
8.7.3 The water depth on the chart is generally expressed at the quasi-origin position. If the shadow sentinel at the origin position reflects the terrain, it can be expressed by shifting the guide line method.
8.7.4 Depth notes shall be in italics. 8B Isobaths
8.B.1 Isobaths are the key elements that reflect the seabed topography. For existing isobaths in the survey data, generally no changes shall be made and they shall be expressed in detail according to the original data.
88-2 Isobaths that need to be drawn by oneself shall accurately pass through the center point of the water depth notes of the same depth in the area with equal depth, and the isobaths shall pass through the outer edge of the area.
8.8.3 Any water depth with displacement, doubtful position, or approximate position notes, as well as water depth that has not been measured to the bottom or has not been accurately measured, shall not be used as the basis for drawing isobaths.
8.8.4° When drawing isobaths, the original appearance of the seabed topography shall be maintained as a principle. Shallow areas shall not be arbitrarily expanded, nor shall deep areas be artificially expanded. In particular, for isolated deep and shallow areas, the expression of isolated topography shall not be affected by arbitrarily expanding shallow or deep areas. 8.8.5 Basic isobath distance
B.8.5.1 Basic scale map. The basic isobath distance is specified in Table 3. Scale
150000
1:250000
1:1 000 000
GB/T 178341999
Depth layer
0~100 m
1c0200m
2c0500m
500--1 000 m
1 Below
0-100m
100--200m
200~500 m
500--1 000 m
1 003 --4 C00 m
400m numbers
0~100m
103~200m
200~500m
500~1000m
1000~4000m
4㎡ and below
Basic isobath interval, m
8.8.5.2 For non-basic scale maps, the basic isobath interval is determined according to the scale of the map and the topographic characteristics of the sea area. 8.8.5.3 For the convenience of map reading, when drawing isobaths, a thick isobath is drawn every four lines; at the same time, isobath annotations are configured, and isobath annotations should be grouped.
8.8.5.4 When the interval between two adjacent thick isobaths is less than 3mm on the map, the four isobaths between them can be disconnected as a group, and they shall not be merged and passed arbitrarily.
8.8.5.5 For isolated isobaths, slope lines should be added to reflect their positive and negative properties. 8.9 Humidity
8.9.1 The distribution characteristics of the bottom sediments should be reflected on maps of various scales, and their properties should be indicated. 8.9.2 The spacing of the bottom sediment annotations is generally 30~～60mm. In sea areas with large changes in seabed topography, it can be appropriately increased. 8.9.3 The adjectives of the bottom sediments are not indicated on maps of various scales. 8.10 Other marine requirements
8.10.1 Underwater features
Fishing equipment, underwater piles), seaweed, fishing magnets, submarine volcanoes, etc. should generally be indicated on maps of 1:250,000 and larger scales, and they can be appropriately omitted when they are particularly dense. The above-mentioned features are generally represented by symbols, and can also be described in words, such as "There are many fish traps nearby". 8.10.2 Offshore facilities
On maps with a scale of 11 million or more, offshore facilities such as offshore platforms, derricks, mooring towers, wellheads, pipelines, etc. are represented. They are not represented on maps with a scale of less than 1:1 million.
8.10.3 Submarine cables and submarine pipelines
8.10.3.1 On maps with a scale of 11 million or more, the location and nature of various submarine pipelines (submarine cables and submarine pipelines) should be accurately represented. On maps with a scale of less than 1:1 million, Not indicated. 8.10.3-2 The buried depth of pipelines buried in the seabed should be indicated. 8.10.3.3 Pipeline markings indicating pipeline zone boundaries or pipeline landing points should be indicated on maps with a scale greater than 1.25 million. 8.10.3.4 Various pipelines are indicated by symbols. 8.70.4 Various zone boundaries
On maps with a scale greater than 1:250,000, the boundaries of port areas, icy areas, mixing areas, breeding farms, and self-heating protection areas are indicated. Those located outside the port are indicated on maps with a scale of 1:250,000, but not on maps with a scale of 11 million or less. 8.11 Omission of elements
CB/T 17834—1999
8.11.1 Land lines beyond 150 mm from the coastline can be omitted on maps with a scale of 1:250,000 or less. 8.11.2 In areas where the seabed topography changes abruptly, other depth contours can be omitted except for ensuring the integrity of the range line of the color layer. 9 Notes
9.1 Notes requirements
Notes are an important basis for interpreting seabed topographic maps. Notes on maps must be correct, with clear instructions and fonts and fonts. The level should meet the requirements of GB12319.
9.2 Types of annotations
9.2.1 Annotations are divided into place name annotations, proper name annotations, explanatory annotations and decorative annotations. 9.2.2 The text of annotations is generally Hanning, Pinyin, Arabic numerals, Roman letters and Roman numerals, and English. 9.3 Place name annotations
9.3.1 Principles for the adoption of place name annotations
9.3.1.1 The order of adopting Chinese place names is as follows; a) Place names officially promulgated by the State Council:
b) Place names named by governments at all levels:
) Place names uploaded on the latest publicly published maps and atlases by China Cartographic Publishing House; d) Place names in the sea area refer to the survey results as basic data and the place names on the latest publicly published nautical charts by the Navigation Guarantee Department of the Navy Headquarters
e) Place names in the land refer to the place names on the latest published topographic maps. : 9.3.1.2 The order of using foreign place names is as follows
a) Place names compiled by the national place name management agency:
b) Place names published on the latest publicly published maps and atlases by China Cartographic Publishing House;
c) Place names on the latest publicly published nautical charts by the Navigation Guarantee Department of the Navy Headquarters; d) Place names translated according to transliteration rules based on mapping data. 9.3-2 Annotation of names of oceans, harbors, etc.
Annotate the names of oceans, seas, bays, harbors, straits, navigation gates, waterways, as well as shoals, trenches, troughs, seamounts, and ridges according to the scale. When the bay name and the port name cannot be noted at the same time, the bay name should generally be noted. If the port name is famous, the port name should be noted instead of the bay name. If the bay and the port, the estuary and the estuary port are the same proper name and cannot be noted at the same time, the port name or the estuary port name should generally be noted. If the port is a component of the bay, the bay name cannot be noted in the port; if the sea is a component of the sea, the sea name cannot be noted in the sea. 9.3.3 Notes on the names of islands, reefs, etc.
9.3.3.1 The names and elevations of isolated islands or reefs should be noted in detail. The font size of the archipelago name should be 1 to 3 levels higher than the name of the largest island in the archipelago; the font size of the island name should be 1 to 3 levels higher than the name of the settlement on the island; the font size of the reef name should be 1 to 3 levels higher than the name of the largest rock in the reef.
9.3.3.2 When the names of islands and rocks are densely annotated, the names of the largest, highest, most external, located on both sides of the national border and located in the outer sea as the base points of the territorial sea should be selected first. 9.3.4 Annotation of the name of Jiajiao
The name of Chanjiao (including Zui, Tou, etc.) should be smaller than the name of Qianwan and Xiyu nearby. When the name of Jiajiao and the names of islands, harbors, etc. cannot be annotated at the same time, the name of Guijiao can generally be omitted, but if it is named, it should be annotated as the name of the base point of the territorial sea. 9.3.5 Annotation of the name of residential areas
9.3.5.1 Annotation of the name of residential areas in China
The annotation method is determined according to the administrative level of the residential areas. The specific provisions are as follows: a) Residential areas above the lock (including towns) should generally be annotated with administrative names, and residential areas below the town should be annotated with natural names: GB/T 17834—1999
b) The administrative name of a city-level settlement should be noted, and the word "city" in the administrative common name should not be omitted, such as Shanghai. Counties and towns are generally noted only by their proper names, not their administrative names. For example, Haifeng County is noted as "Haifeng". When the proper name has only one character, the administrative common name should be retained, such as "Fengxian"; c) Settlements at the county level and above should be noted in brackets if there is a secondary name, such as Daishan (Gaoting). When the place is a place with two administrative centers and the place names are different, both names should be noted at the same time, distinguished by font and font level, such as "Ningbo" When a place is a place with two administrative resident levels and the proper names are alternating, only the name of the higher level is noted. For example, Putian City and Daitian County are located in the same place, and only "Daitian City" is noted. The secondary name of settlements below the town level (inclusive) is not noted. d) For islands that only show settlements, if the settlement and the island have the same name, the settlement name may not be noted. 9.3.5.2 Notes on the names of foreign settlements
The names of foreign settlements are noted. The levels are divided according to the number of population, and the names of settlements at each level are noted in different fonts. 9. 3. 6 Name annotation
According to the scale, select the names of the coastal veins, the names and elevations of the peaks, etc. 9.3.7 Name annotations of rivers, tidal bores, reservoirs, etc. The names of rivers flowing into the sea with a length of more than 150 mm and larger tidal bores and reservoirs should be annotated on the map. 9.4 Proper name annotations are generally not shown on the map. 9.5 Explanatory annotations
All annotations related to the topography, such as contour annotations and contour depth annotations, must be shown, and other explanatory annotations are not shown. 9.6 Title and decorative annotations
Title annotations and decorative annotations are the annotations on the map. The vertical lines should be annotated according to the provisions of Appendix A. 9.7 Romanization
9.7.1 Provisions for the annotation of place names in Chinese phonetic or Romanization form 9.7.1.1 The names of the residents above the county and city level in China on the map, the names of famous corners, estuaries, large islands and important archipelagos, etc. should be annotated with Chinese phonetic place names.
9.7.1.2 In addition to annotating Chinese characters, the main place names of foreign regions on the map should also be annotated with Romanization place names according to the Chinese phonetic spelling rules of the sovereign country in the region.
9.7.1.3 The Chinese phonetic alphabet of Chinese place names should be spelled according to the Chinese place name section of the Chinese phonetic alphabet spelling rules of Chinese place names or the Chinese phonetic alphabet spelling of place names in public publications such as the Chinese phonetic version of the map of the People's Republic of China. 9.7.2 Provisions for using English annotations
9.7.2.1 If the common names such as "ports and waterways" are only preceded by adjectives such as big, small, inner, outer, east, south, west, north, and middle, they can be supplemented with beautiful literary annotations. For example, if the proper name is preceded by North Channel, it should be supplemented with Chinese phonetic annotations, such as Dalian Port (Dalian Gang). 9.7.2.2 If there is no proper name before the common names such as dark magnets, harbors, bays, breakwaters, etc., English annotations can be supplemented, such as Breakwater (Break waler); if there is a proper name before it, Chinese phonetic annotations should be used instead, such as Haikou Port (Haikon Gangchi). 9.7.2.3 The common name with ordinal number shall be supplemented with English annotation, such as Pier 1 (PieINo1). 9.7.3 Provisions on font and font size of Chinese Pinyin and English annotation 9.7.3.1 The name of the figure and the name of the publishing unit in the title shall be capitalized. 9.7.3.2 For the letters in the annotation on the figure that are larger than 15th level and are separated by separated characters, each letter shall be capitalized. For those with less than 15th level, the first letter of each word shall be capitalized, and the rest shall be lowercase: 9.7.3.3 The title of the explanatory text shall be capitalized. The first letter of the first sentence in the text shall be written in Chinese, and the rest shall be lowercase. 9.7.3.4 If the Chinese characters are in Songti or Thin Songti, the English or Chinese Pinyin shall be expressed in Cuoti, if the Chinese characters are in Equal Linear Font, the English or Chinese Pinyin shall be expressed in Medium Linear Font, and if the Chinese characters are in Medium Linear Font, the English or Chinese Pinyin shall be expressed in Thin Equal Linear Font. English or Chinese Pinyin shall generally be noted below, to the right or to the left of the corresponding Chinese characters.
9.7.3.5 For Chinese characters of level 14 and above, English or Chinese Pinyin letters are two levels lower than Chinese characters; for Wen characters of level 10-13, English or Chinese Pinyin letters are one level lower than Chinese characters; for Chinese characters of level 9 and below, English or Chinese Pinyin letters are at the same level as Chinese characters. 9.7.3.6 The fonts and font sizes of other Wen Pinyin and beautiful text notes shall comply with the relevant provisions of GB12319. 10 Correction, proofreading, review and acceptance of original drawings 10.1 Correction of original drawings
GB/T17834—1999
The unit responsible for the preparation of the work shall make corrections and revisions to the areas with new survey data according to the latest porcelain material notification before submitting the finished drawings to the business agency for acceptance.
10.2 Proofreading of original drawings
After the operator has made self-correction, the edited and printed original drawings shall first be proofread by the operation group leader, and a comprehensive, systematic and thorough inspection shall be carried out to correct errors and unreasonable phenomena. After the initial proofreading of the edited and printed original drawings, the proofreader shall conduct a comprehensive, systematic and thorough inspection on them. If any problems are found that do not meet the specifications, diagrams, mapping plans and other relevant regulations, the operator shall correct them. 10.3 Review of original drawings
After the proofreading of the edited and printed original drawings, the responsible editor of the drawings shall also conduct a comprehensive and systematic inspection of their main contents and the implementation of specifications, diagrams, mapping plans and other relevant regulations. If any problems are found, the operator shall correct them. 10.4 Acceptance of original printing drawings
After proofreading and reviewing, before sending the original printing drawings to the factory for printing, the publishing agency or its entrusted department shall also conduct key inspections or spot checks on its important contents. If any problems are found, the operators shall correct them. Only after confirmation of compliance can they be sent to the factory for printing. 10.5 Quality assessment of original drawings
The initial proofreader, proofreader, reviewer, and acceptor of the original drawings and printed source drawings shall record the main results of their respective inspections in the drawing calendar. At the same time, the proofreader shall conduct a quality assessment on the drawing of the original drawings, the reviewer shall conduct a quality assessment on the drawing and proofreading of the original drawings; and the acceptor shall conduct a quality assessment on the drawing, proofreading, and reviewing of the source drawings. 11 Preparation for printing and publishing
The main contents of the preparation for printing and publishing include: determining the printing color scheme, making color separation reference drawings, proofreading, reviewing, and accepting color proofs, and accepting the printed drawings.
11.1 Determination of printing color scheme
11.1.1 Seabed topographic map--generally printed in black, blue, brown and white. 11.1.2 The color of each element printing is stipulated as follows; a) Purple: symbols and notes printed in purple according to the provisions of GB12319; b) Brown, contour lines and their notes, sandy land, steep cliffs and rocky mountains, landform symbols indicating the nature of the coast, isolated peaks, peak clusters, lava flows and craters, and land ridges above the coastline; c) Blue, beach lines, isobaths and notes, stratified coloring of the sea waters below the 0 m line (at the beach exit line); d) Blue: used for other key symbols and notes other than the above-mentioned key symbols. 11.1.3 Stratified coloring of the land and sea areas
The land area is not stratified, and 15% brown dots are used for general coloring; the sea waters should be stratified. 11.1.3.1 For the basic scale map and the color scheme for the stratified sea waters, see Table 4. Table 4
General coloring
1:50000
α~10 m
10~80 m
30--50 m
50100 m
100-150 m
15~200 m
200 m and above
1:250000
30~·50 m
50-10 m
100~150 m
150~200 m
200~500 m
Below 500 m
1100000
0~50 ㎡
50--100m
100200m
200~1000m
1000~2000m
2000~4000m
Below 4000m
Mesh ratio steel (for)4 Acceptance of original printing drawings
After proofreading and reviewing, before sending the original printing drawings to the factory for printing, the publishing agency or its entrusted department shall also conduct key inspections or spot checks on its important contents. If any problems are found, the operators shall correct them. Only after confirmation of compliance can they be sent to the factory for printing. 10.5 Quality assessment of original drawings
The initial proofreader, proofreader, reviewer, and acceptor of the original drawings and printed source drawings shall record the main results of their respective inspections in the drawing calendar. At the same time, the proofreader shall conduct a quality assessment on the drawing of the original drawings, the reviewer shall conduct a quality assessment on the drawing and proofreading of the original drawings; and the inspector shall conduct a quality assessment on the drawing, proofreading, and reviewing of the source drawings. 11 Preparation for printing and publishing
The main contents of the preparation for printing and publishing include: determining the printing color scheme, making color separation reference drawings, proofreading, reviewing, and accepting color proofs, and accepting the printed drawings.
11.1 Determination of printing color scheme
11.1.1 Seabed topographic map--generally printed in black, blue, brown and white. 11.1.2 The color of each element printing is stipulated as follows; a) Purple: symbols and notes printed in purple according to the provisions of GB12319; b) Brown, contour lines and their notes, sandy land, steep cliffs and rocky mountains, landform symbols indicating the nature of the coast, isolated peaks, peak clusters, lava flows and craters, and land ridges above the coastline; c) Blue, beach lines, isobaths and notes, stratified coloring of the sea waters below the 0 m line (at the beach exit line); d) Blue: used for other key symbols and notes other than the above-mentioned key symbols. 11.1.3 Stratified coloring of the land and sea areas
The land area is not stratified, and 15% brown dots are used for general coloring; the sea waters should be stratified. 11.1.3.1 For the basic scale map and the color scheme for the stratified sea waters, see Table 4. Table 4
General coloring
1:50000
α~10 m
10~80 m
30--50 m
50100 m
100-150 m
15~200 m
200 m and above
1:250000
30~·50 m
50-10 m
100~150 m
150~200 m
200~500 m
Below 500 m
1100000
0~50 ㎡
50--100m
100200m
200~1000m
1000~2000m
2000~4000m
Below 4000m
Mesh ratio steel (for)4 Acceptance of original printing drawings
After proofreading and reviewing, before sending the original printing drawings to the factory for printing, the publishing agency or its entrusted department shall also conduct key inspections or spot checks on its important contents. If any problems are found, the operators shall correct them. Only after confirmation of compliance can they be sent to the factory for printing. 10.5 Quality assessment of original drawings
The initial proofreader, proofreader, reviewer, and acceptor of the original drawings and printed source drawings shall record the main results of their respective inspections in the drawing calendar. At the same time, the proofreader shall conduct a quality assessment on the drawing of the original drawings, the reviewer shall conduct a quality assessment on the drawing and proofreading of the original drawings; and the inspector shall conduct a quality assessment on the drawing, proofreading, and reviewing of the source drawings. 11 Preparation for printing and publishing
The main contents of the preparation for printing and publishing include: determining the printing color scheme, making color separation reference drawings, proofreading, reviewing, and accepting color proofs, and accepting the printed drawings.
11.1 Determination of printing color scheme
11.1.1 Seabed topographic map--generally printed in black, blue, brown and white. 11.1.2 The color of each element printing is stipulated as follows; a) Purple: symbols and notes printed in purple according to the provisions of GB12319; b) Brown, contour lines and their notes, sandy land, steep cliffs and rocky mountains, landform symbols indicating the nature of the coast, isolated peaks, peak clusters, lava flows and craters, and land ridges above the coastline; c) Blue, beach lines, isobaths and notes, stratified coloring of the sea waters below the 0 m line (at the beach exit line); d) Blue: used for other key symbols and notes other than the above-mentioned key symbols. 11.1.3 Stratified coloring of the land and sea areas
The land area is not stratified, and 15% brown dots are used for general coloring; the sea waters should be stratified. 11.1.3.1 For the basic scale map and the color scheme for the stratified sea waters, see Table 4. Table 4
General coloring
1:50000
α~10 m
10~80 m
30--50 m
50100 m
100-150 m
15~200 m
200 m and above
1:250000
30~·50 m
50-10 m
100~150 m
150~200 m
200~500 m
Below 500 m
1100000
0~50 ㎡
50--100m
100200mbZxz.net
200~1000m
1000~2000m
2000~4000m
Below 4000m
Mesh ratio steel (for)
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