Boat Design
Categories
Navigation Wind Force and Wave Height
A Ocean
Designed for extended voyages where
conditions may exceed wind force 8 (Beaufort
scale) and wave heights of 4 m (13 ft) and
higher.
B Offshore
Designed for offshore voyages where
conditions may experience wind force 8
(Beaufort scale) and wave heights up to 4 m
(13 ft).
C Inshore
Designed for voyages in coastal waters, large
bays, estuaries, lakes and rivers where
conditions may experience wind force 6
(Beaufort scale) and wave heights up to 2 m
(6.5 ft).
D
Sheltered
waters
Designed for voyages on sheltered coastal
waters, small bays, small lakes, rivers, and
canals where conditions may experience wind
force 4 (Beaufort scale) and wave heights up to
0.5 m (1.5 ft).
ISO 6185 part—The ISO 6185 part categories defines the power rating for the
boat. The following table shows these power ratings.
ISO 6185 Part Categories
Powered Boat Rating
Part 1: Type ll Powered boats not exceeding 4.5 kw (6 hp)
Part 2: Type V Powered boats of 4.5 to 15 kw (6 to 20 hp)
Part 3: Type VII Powered boats of 15 kw and greater (20 hp +)
GENERAL INFORMATION
eng 15
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