Chris-Craft Launch 22 Owner's Manual download pdf (Page 18)

1–6 Chris-Craft

Introduction

Design Category

Every boat built, regardless of manufacturer, falls within a specific design category applicable to that

model. Currently there are four (4) categories designated by the ISO 10240 Standard. They are:

• Category A – Ocean: Craft designed to operate in winds that may exceed wind force 8* (34-40 knots/39-46

mph) and in significant wave heights of 4 meters (13 feet) and above. These vessels are largely self-sufficient.

Abnormal conditions such as hurricanes are excluded. Such conditions may be encountered on extended voy-

ages, such as ocean crossings or inshore when unsheltered from the wind and waves for several hundred nau-

tical miles.

• Category B – Offshore: Craft designed to operate in winds up to, and including, wind force 8* (34-40 knots/39-

46 mph) and in significant wave heights up to, and including, 4 meters (13 feet). Such conditions may be

encountered on offshore voyages of sufficient length or on coastal waters when unsheltered from the wind and

waves for several dozens of nautical miles. These conditions may also be experienced on inland seas of suffi-

cient size for the wave height to be generated.

• Category C: Craft designed to operate in winds up to, and including, wind force 6* (22-27 knots/25-31 mph) and

in wave heights up to, and including, 2 meters (7 feet). Such conditions may be encountered in exposed inland

waters, in estuaries, and in coastal waters in moderate weather conditions.

• Category D: Craft designed to operate in winds up to, and including, wind force 4* (11-16 knots/13-18 mph) and

in wave heights up to, and including, 0.3 meters (1 foot) with occasional waves of 0.5 meters (2 feet) maximum

height. Such conditions may be encountered in sheltered inland waters and in coastal waters in fine weather.

* Wind force is based upon the Beaufort Scale.

For categories A, B, and C, the significant wave height is the average height of the highest one-third of the

waves, which approximately corresponds to the wave height estimated by an experienced observer. Some

waves will double this height.

The boats addressed in this manual are certified as follows:

BOAT CATAGORY

Lancer 20/Launch 22/Launch 25/Lancer Rumble C

Launch 28 B

Corsair 25 and 28 B

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Chris-Craft Launch 22 Owner's Manual Page 18