This standard specifies the forward and backward vision requirements at the steering position for motor boats with a hull length of no more than 24m. GB/T 18815-2002 Vision at the steering position of motor boats GB/T18815-2002 Standard download decompression password: www.bzxz.net

1CS_47.080
National Standard of the People's Republic of China
GB/T18815—2002
Small craft engine-driven-Field of vision from helm pesition(1S011591:2000,DT)
Issued on August 28, 2002
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Implementation on January 1, 2003
W. Foreword
This standard is equivalent to IS011591:2000 "Visual Field of Vision from Helm Pesition for Small Craft" (English version). This standard is equivalent to ISO11591:2000. For ease of use, this standard has made the following editorial changes: a) "this international standard" is changed to "this standard"; 6) the decimal point symbol *." is used instead of the decimal point symbol 9\," c) the foreword of the international standard is deleted. This standard is proposed by China Shipbuilding Industry Corporation. The non-standard is submitted by the 78th Research Institute of China Shipbuilding Industry. The drafting unit of this standard: China Shipbuilding Industry Comprehensive Technology and Economic Research Institute. The main drafters of this standard: Luo Tunyan, Lin Dehui, GB/T18815--2002 W1 Scope
Field of view of steering position of motor boats
GB/T 18815--2002
This standard specifies the field of view requirements for the front and rear of the power exploration position for motor boats with a boat length of not more than 24m. This standard does not apply to the following small craft:
sailing boats,
tiller-steering boats with a maximum speed of less than 10 kn (2.9). It is noted that when a maneuvering boat moves in this manner, it may cause a certain degree of left-hand drift, in which case the front view is temporarily avoided. This standard does not take into account the situation where the view at the steering position is temporarily lost when the boat passes from displacement to planing to large-scale navigation. 2 Terms and definitions
The following terms and definitions apply to this standard. 2.1
High eye position (leimsnan ​​in standing pngitinn) can be 1 30 mm above the standing surface and 400 mm from the center of the steering wheel rim (see Figure 1). Unit is meter
High vision mark;
9---standard horizontal line;
3--low vision:
4Required vertical field of view range;
The longest line of view that is not blocked:
The point where the line is blocked.
Figure 1 The visual range and vertical field of view when the helmsman is standing W.bzsoso:comGB/T 18815—2002
High eye position (Helnisman inseated position) 840m above the intersection of the compressed base and the backrest of the chair, 400mm from the center of the steering wheel rim (see Figure 2). The unit is millimeters.
Visual field obstruction:
Standard position;
Line of sight:
Low standard position,
Required vertical visual field range:
The lowest line where the visual field is not obstructed;
Visual field obstruction point:
Seat retracted state (current 2.5),
Figure 2 Visual position and vertical visual field range in seated position 2.3
Helmsman in standing position Low eye posilion (helnisman in standing position) 1 480 mm above the surface of the rudder standing upright, at a position 400 m from the center of the rudder wheel rim (see Figure 1). 2.4
Low eye pnsitlon (helnisman in seated position) The position of the seat bottom 6g (m2) above the intersection line of the compressed seat bottom and 400 mm from the center of the steering wheel rim (see Figure 2). 2.5
Compressed seat bottom The center plane of the intersection line of the bottom and the back of the seat when the helmsman's seat is subjected to the normal tension of a spherical object with a diameter of 25 mm and a vertical load of 100 N (see Figure 2). 2.6
Theoretical keel The intersection of the horizontal projection of the lowest bottom surface of the sailing surface of the boat with the longitudinal center line (see Figure 3) in a small boat with no obvious intersection part.
W.bzsoso: com2.7
1-Theoretical keel (2.6)
Horizontal reference line levei reference line Figure 3 Theoretical keel of multihulled boat
Vertical range of vision between actual waterline and designated waterline determined at the designed speed of navigation GB/T 18B15--2002
The range between the lowest unobstructed vision at low sight and the highest unobstructed vision at high sight (see Figures 1 and 2). A boat with ailler-steered cruft is maneuvered by means of an outboard tiller or a stern rudder directly connected to the tiller bar at the stern. 3 Requirements
3.1 In accordance with the requirements of this standard, the position of the maneuvering mechanism shall allow the operator to have a certain field of vision, including observation of the water, when fully loaded, on standby, heading, maneuvering, mooring or other specified maneuvers. 3.2 To maintain the line of sight of the maneuvering parts, all glass through which the line of sight passes shall comply with the requirements of this standard and shall have a perspective of at least 70%.
3.3 The waist of each maneuvering part shall be at least There is one steering position that meets the requirements of this standard, and the other steering positions that do not meet the requirements of this standard. At these positions, there are clearly visible signs for operators. The signs should have the ISO caution symbol and at least the following information in a language acceptable to the operator's country: Caution; Vision is limited at this steering position, keep looking as required. 3. When the steering position is designed for use in a standing position or a seated position, at least one position should meet the requirements of this standard. 3.5 The control valves and shift controls intended for use by the operator are located within 0.7 m of the high sight level, and the control level should be adjusted by the operator in the low sight level. For boats designed to be operated in both sitting and standing positions, the control system should meet the requirements of at least the seated position.
3.6 The low sight level requirement can be achieved by adjusting the vertical height of the operator. 3.7 Fixed or removable tops or other structural parts, as well as instruments installed around the helmsman, should not obstruct the directional vision required by this standard.
4 Forward field of view
4.1 Horizontal direction
The horizontal field of view is shown in Figure 4.
IGB/T18815-2002
1—left cabin
2 Horizontal field of view
3—center line of cabin
Centre of field of view
5—position of transducer position;
6—right cabin,
Figure 4 Horizontal field of view
4.1.1 At the steering gear position, the forward field of view should be the entire horizontal arc from 112.5° to 90° to the right. When the cabin is located on the left, right or center line, the field of view is required to be the same on the left or right. 4.1-2 The pilot does not leave the control device or controller, that is, when the sight position is no more than 0.5m forward, there should be a field of vision from 90° to 112.5° without glare.
4.1.3 The central area of ​​the field of vision should be the entire vertical viewing range directly in front of the pilot's sight position, and extend at least 15 degrees on both sides of the straight line from the sight position to the obstructed distance described in 4.1.5. Fixed obstacles that block the line of sight in this area, such as instruments, deck hooks, horns, lights and pillars, should be arranged so that the operator can maintain a clear line of sight when the displacement of the head from the viewing position to any horizontal direction does not exceed 35mm. The total angle of obstruction by fixed objects measured from the viewing position should not exceed 8°, and these objects should not overlap when observed from this viewing position. 4.1.4 Outside the center of the field of vision required in 4.1.3, within the field of vision required in 4.1.1, fixed obstacles that block the line of sight should be arranged so that the operator can maintain a clear line of sight when the displacement of the head from the viewing position to any horizontal direction does not exceed 100mm. The total angle of obstruction by fixed objects measured from the viewing position should not exceed 30°, and these objects should not overlap when observed from this viewing position. 4.1.5 Within the horizontal field of view, the obstructed view from the obstructed point of the bow or sight line to the water as determined by the horizontal reference line (see 4.2.1) shall not be greater than 4m and shall not be greater than 50m. 4.2 Vertical direction
4.2.1 The vertical field of view relative to the horizon and the water surface is based on the determination of the state of the boat and the determination of the state of the boat is based on the horizontal reference line determined when the boat is loaded or floating. 4
Ww.bzsoso：comGB/T 18815—2002
For boats with a hull length of less than 10m and a speed of less than 7V1.m (l is the hull length in m) or 20kn (the smaller one), the horizontal level is determined when the boat is equipped with an outboard engine with the maximum rated power, or an inboard engine with the maximum power installed by the manufacturer, and: 8) When the bottom of the boat is adjacent to the keel or theoretical keel, the inclination angle of the rear half relative to the water surface is 4 (the boat is lifted); 9) When the bottom of the boat is adjacent to the keel or theoretical keel · For a small boat with a length of not more than 24 meters and capable of cruising at a cruising speed, the cruising angle of the far side is determined when the boat is sailing at a cruising speed, that is, when the bottom surface of the boat intersects the horizontal surface far from the water at a point where the minimum cruising speed is 5 kn, or 1/A of the difference between the cruising speed and the maximum cruising speed (whichever is smaller), the working condition mentioned in c) above is used for confirmation.
For boats equipped with trim plates and/or trim trim systems, the trim plates shall be adjustable and set at an angle not exceeding the total displacement level; when gliding or sailing at the same displacement speed as the docking, the propeller trim position shall be adjustable and set at an angle not exceeding 5° above the bottom of the boat carrying the propeller along the centerline of the stern or water jet (propulsion) port. For boats sailing only at displacement speed, the horizontal reference line is determined by the distance that produces the maximum damping when the boat is at rest or at maximum displacement (whichever produces the maximum damping distance).
4-2.2 The minimum vertical distance shall be the area between the horizontal line at the high eye level and the line at the bottom of the boat (see Figures 1 and 2). The provisions of 4.1.5 shall be met throughout the horizontal range of the field of view specified in 4.1.[.g/3
” Water surface
2 keels If there are,
Figure 5 Sliding state
5 Horizontal rearward field
5.1 The horizontal rearward field of view behind the main steering position without water-permanent rooms or other ten-story buildings blocking the front and rear vision should be the entire 135\ horizontal area, and the rearward longitudinal direction should be evenly divided. The rearward field of view should be that when the helmsman is sitting, his visual position moves no more than -s tn+ per time, or when the helmsman is standing, his visual position moves no more than 1\, and there is no rearward range that can be seen without leaving the steering wheel or controller. 5. 2. Permanent cabins or other superstructures behind the camera that block the rear view, easily removable obstructions, active or inactive objects, and the stern of the rear should not be considered permanent superstructures. In bad weather, when these objects are not in use, careful inspection and maintenance of barriers should be carried out. Other measures should be taken, such as installing mirrors so that the helmsman can meet the requirements of 5.1 when leaving the steering wheel.
On a small ship equipped with an autopilot, the helmsman can leave the steering position temporarily to meet the vision requirements of 5.1. Ww.bzsoso: comGB/T 18815--2002
6 Boat Owner's Manual
The following should be included in the boat owner's manual
) The large trim angle of the boat and other factors caused by one or more of the following variables may obstruct the view of the operator at the steering position:
Propulsion engine trim angle (on boats equipped with a power trim system on the propulsion system) Hull trim plane angle (on boats equipped with a power trim plane or trim tab on the deck); loading and unloading Load distribution;
speed of release:
acceleration of rapid brushing; wwW.bzxz.Net
displacement to planing;
sea conditions,
rain and splashing,
darkness and
interior lights on board
position of visors or curtains;
installation of personnel or activities of small persons in the operator's field. The International Maritime Code for Avoiding Disk Drives (COI.RE(GS)) and the Rules of Navigation require that a constant lookout and observation of the correctness of the route be maintained at all times. Compliance with these rules is essential,
for boats with more than one steering position, especially those that do not meet the vision requirements. Note: The vision of steering stations located at
is restricted to avoid collision. When using these steering stations, keep a clear look forward and astern as required by the COI.RECS and the Rules of Navigation.The following factors may obstruct the operator's view at the helm: the trim angle of the propulsion engine (on boats fitted with a powered trim system on the propulsion unit); the trim plane angle of the hull (on boats fitted with a powered trim plane or trim tabs on the hull); loading and load distribution; speed of deceleration: the acceleration effect of rapid brushing; the transition from displacement to planing; sea conditions, rain and splashing, darkness and humidity, the position of interior lights, bows or curtains; the presence of persons or moving equipment within the operator's field of vision. The International Maritime Code for Avoiding Discs (COI.RE(GS)) and the Rules of Navigation require that you keep a constant lookout and observe the correctness of the route at all times. Compliance with these rules is essential, and for boats with more than one steering position, especially those that do not meet the vision requirements. Note: The vision of the steering station located at the position of 1 is limited to avoid collision. When using these steering stations, keep a lookout forward and astern as required by the COI.RECS and the Rules of Navigation.The following factors may obstruct the operator's view at the helm: the trim angle of the propulsion engine (on boats fitted with a powered trim system on the propulsion unit); the trim plane angle of the hull (on boats fitted with a powered trim plane or trim tabs on the hull); loading and load distribution; speed of deceleration: the acceleration effect of rapid brushing; the transition from displacement to planing; sea conditions, rain and splashing, darkness and humidity, the position of interior lights, bows or curtains; the presence of persons or moving equipment within the operator's field of vision. The International Maritime Code for Avoiding Discs (COI.RE(GS)) and the Rules of Navigation require that you keep a constant lookout and observe the correctness of the route at all times. Compliance with these rules is essential, and for boats with more than one steering position, especially those that do not meet the vision requirements. Note: The vision of the steering station located at the position of 1 is limited to avoid collision. When using these steering stations, keep a lookout forward and astern as required by the COI.RECS and the Rules of Navigation.
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