ISO 6185-4:2011 インフレータブルボート—パート4：船体長が8 m〜24 mで、モーター出力定格が15kW以上のボート | ページ 6

3.1

rigid inflatable boat

RIB

buoyant structure comprising two essential parts: a lower hull formed by a rigid structure, achieving part of its intended shape with a non-rigid buoyancy tube that is of either inflatable or foam-filled type and where the buoyant volume of the buoyancy tube comprises not less than 50 % of the total required buoyant volume of the boat (3.4)

Note 1 to entry: Tubes made from rigid aluminium, rotomoulded polyethylene, glass-reinforced plastic or other rigid materials are excluded.

3.2

inflatable buoyancy tube

multi-chambered inflatable buoyancy tube attached to the length of both port and starboard sides of the hull when the boat is in use, and inflated with air

3.3

foam-filled buoyancy tube

buoyancy tube attached to the length of both port and starboard sides of the hull when the boat is in use, and filled with resilient closed-cell type foam

Note 1 to entry: For material requirements, see 5.7.

3.4

buoyancy of a RIB

buoyancy comprising the buoyant volumes of the buoyancy tube (3.2 and 3.3), added to the permanent inherent buoyancy (3.5), added to the permanent sealed buoyancy (3.6), added to the inherent buoyancy of the rigid parts of the boat (3.7)

3.5

permanent inherent buoyancy

buoyancy provided by non-intercellular (closed-cell) foam or other materials, contained within the hull and cockpit, which are less dense than fresh water

Note 1 to entry: For material requirements, see ISO 12217-1:2013, Annex F.

3.6

permanent sealed buoyancy

buoyancy provided by two or more sealed compartments, contained within the hull and cockpit, filled with air

Note 1 to entry: For material requirements, see column “Air containers” in ISO 12217-1:2013, Table F.1.

3.7

inherent buoyancy of the rigid parts of the boat

volume of the inherent buoyancy of the rigid parts of the boat calculated in accordance with ISO 12217-3:2013, Annex D

3.8

reinforced materials

materials which have a coated base cloth

3.9

inboard area

internal surface area defined by a vertical plane tangential to the innermost side of the buoyancy tube and perpendicular to the cockpit sole

3.10

crew limit

CL

maximum number of persons to be carried when the boat is underway, as displayed on the builder's plate

3.11

design category

description of the sea and wind conditions for which a boat is assessed by this part of ISO 6185 to be suitable

Note 1 to entry: The definitions of these design categories align with those used in the Recreational Craft Directive of the European Union, EU Directive 94/25/EC as amended by Directive 2003/44/EC.

3.11.1

design category B “offshore”

category of boats considered suitable to operate in seas with significant wave heights up to 4 m and winds of Beaufort force 8 or less

3.11.2

design category C “inshore”

category of boats considered suitable to operate in seas with significant wave heights up to 2 m and a typical steady wind force of Beaufort force 6 or less

3.11.3

design category D “sheltered waters”

category of boats considered suitable to operate in waters with significant wave heights of up to and including 0,3 m with occasional waves of 0,5 m height, for example from passing boats, and a typical steady wind force of Beaufort force 4 or less