Resolution A.207(VII)

 RECOMMENDATION FOR AN INTERIM SIMPLIFIED STABILITY CRITERION FOR DECKED FISHING VESSELS UNDER 30 METRES IN LENGTH

(12 October 1971)

The Assembly,

Noting Article 16(i) of the Convention on the Inter-Governmental Maritime Consultative Organization concerning the functions of the Assembly,

Noting also Recommendation 7 of the International Conference on Safety of Life at Sea, l960, concerning intact stability of passenger ships, cargo ships and fishing vessels,

Recalling Resolution A.168(ES.IV) concerning the Recommendation on Intact Stability of Fishing Vessels,

Recognizing the need to provide internationally a simple stability criterion for small fishing vessels for which no stability data or lines drawings are available,

Having considered the Recommendation by the Maritime Safety Committee at its twenty-second session,

Adopts the Recommendation on an Interim Simplified Stability Criterion for Decked Fishing Vessels under 30 metres in Length, the text of which appears at Annex to this Resolution,

Invites all governments concerned to take steps to give effect to the Recommendation as soon as possible,

Requests the Maritime Safety Committee to continue study on the subject,

Authorizes the Maritime Safety Committee to amend the Recommendation if necessary in the light of such studies.

   ANNEX
 RECOMMENDATION FOR AN INTERIM SIMPLIFIED
 STABILITY CRITERION FOR DECKED FISHING
 VESSELS UNDER 30 METRES IN LENGTH

1. For decked vessels with a length less than 30 m, the following approximate formula for the minimum metacentric height GM (in metres) for min all operating conditions should be used as the criterion:   

where

L = Length of the vessel on the waterline in maximum load  condition (in metres)

l = Actual length of enclosed superstructure extending from s side to side of the vessel (in metres)

B = Extreme breadth of the vessel on the waterline in maximum load condition (in metres)

D = Depth of the vessel measured vertically amidships from the base line to the top of the upper deck at side (in metres)

f = Smallest freeboard measured vertically from the top of the upper deck at side to the actual waterline (in metres)

The formula is applicable for vessels having:

(iv) sheer fore and aft at least equal to or exceeding the standard sheer prescribed in Regulation 38(8) of the  International Convention on Load Lines, l966;