ISO 11591-2019 pdf free.Small craft-Field of vision from the steering position.
low eye position <seated operator> eye position 690 mm above the intersection of the compressed seat and the seat- back, 400 mm from the centre of the steering wheel rim.
3.9 level reference line designated waterline of the craft determined for its operating conditions.
3.10 human-powered craft craft for which the primary means of propulsion is human power.
3.11 sailing craft craft for which the primary means of propulsion is wind power.
3.12 power-driven craft craft for which the primary means of propulsion is an engine.
3.13 planing mode mode of running of a craft in the sea such that its mass is significantly supported by forces coming from dynamic lift due to speed in the water.
3.14 operator person steering the craft.
3.15 normal condition of use mode with regards to speed and load in which a craft is typically operated.
4 Requirements for all craft
4.1 General requirements
The following requirements shall be fulfilled under normal condition of use.
For craft having more than one steering position, at least one steering position shall meet the requirements of this document and be designated ‘main steering position. Other steering positions that do not meet the requirements of this document shall display a sign at these positions, in clear view of the operator, with the ISO symbol for warning in accordance with 19.1 of ISO 11192:2005 or symbol W001 of ISO 7010 together with warning information (see Clause 8) in a language acceptable to the
country of intended use.
4.2 Field of vision一Forward
4.2.1 Horizontal
4.2.1.1 A field of vision from the eye position at the steering position shall be provided throughout a horizontal arc of at least 112,5° on the starboard side to 112,5 on the port side of the craft (see Figure 1].For port side, starboard side or centreline steering positions, these angles of vision to port and starboard are required without the operator leaving the steering position.
4.2.1.2 Permanent and removable obstructions to vision shall be such that clear vision from the eye position can be maintained with normal movement of the operator while maintaining control of the craft.
4.2.2 Vertical
4.2.2.1
The vertical field of vision forward to the horizon and water surface shall be determined with the craft at an attitude established by the level reference line determined with the craft in the loaded condition (mLDc) in accordance with ISO 8666.
4.2.2.2 Obstructed vertical vision distance to the water surface in the horizontal field of vision from the stem or point of visual obstruction on the craft, as determined by the level reference line, shall not exceed four times the length of hull, LH, defined in ISO 8666, and in no case shall exceed 50 m.
4.3 Field of vision — Astern
If permanent obstructions to vision exist, astern unobstructed visibility shall be provided to the operator while maintaining control of the craft by:
— normal movement of the operator, or
— mirrors; or
— other means.
5 Additional requirements for human-powered craft
5.1 General requirements
If the operator of a human-powered craft kneels, sits or stands with his back to the course, it shall be ensured that the superstructure of the craft gives the operator enough room to turn around frequently into the direction of travel to comply with this document (see Clause 4).
6 Additional requirements for power-driven craft with steering wheel or equivalent fixed installed direction control
6.1 General requirements
A forward field of vision shall be provided directly in front of the operator’s eye position throughout the vertical field of vision and extending to at least j50 on either side of a line forward from the eye position (see Figure 1) to the obstructed vision distance as specified in 422. This may be achieved with normal movement of the operator’s head while maintaining control of the craft.
6.1.1 The requirements for low eye position can be met by an operator’s seat with vertical height adjustment.
6.1.2 From the designated main steering position, standing or seated, the minimum vertical field of vision shall extend from the horizontal with respect to the relevant high eye position to the unobstructed line of vision from the relevant low eye position (see Figures 2 and ). while ensuring the horizontal arc of vision specified in 42.1.ISO 11591 pdf download.