Ockelbo B21 CAB, Owner'S Manual

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3. GENERAL INFORMATION __PAGE 23
Note: All dimensions in mm. All boats are hand-made and therefore some minor
deviations may occur.
3.2 D
ESIGN CATEGORIES
There are four design categories of boats based upon their ability to withstand wind and
water conditions; this boat is designed in accordance with Category C.
Category A – Designed for winds that may exceed wind force 8 (Beaufort scale – 40
knots) and a significant wave height of 4m and above.
Category B – Designed for winds that include up to wind force 8 (Beaufort scale – 40
knots) and significant wave height up to and including 4m.
Category C – Designed for winds that include up to a wind force 6 (Beaufort
scale – 27 knots) and a significant wave height up to and including 2m.