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9 — Guidance on a method of calculation of the minimum distance from the deepest operating waterline to the lowest point of the top of the bulwark or to the edge of the working deck Internationaal Verdrag van Torremolinos voor de beveiliging van vissersvaartuigen, 1977

Guidance on a method of calculation of the minimum distance from the deepest operating waterline to the lowest point of the top of the bulwark or to the edge of the working deck

(1) The minimum vertical distance from the deepest operating waterline to the lowest point of the top of the bulwark or to the edge of the working deck if guard rails are fitted, referred to in Regulation 108(2) should be determined for each vessel, taking into account the probability of shipping water on the deck when the vessel is in moderate beam seas when fishing. This probability should not be greater than 5 per cent. The calculations should take account of the damping coefficient associated with the presence of bilge keels or any other roll damping arrangements.

(2) Where no national practice exists, this distance may be determined bij means of the following formulae, based upon the regression analysis of results of the calculations of the probability of shipping water on deck which are assumed to be 5 per cent in fully developed sea states with significant wave heights of 5.4 metres and 4.0 metres respectively:

H = 0.53+0.11B+0.32(2.60-B/d)+0.85(CB-0.60)+0.61(GM-0.70) metres

for vessels intended for fishing operations at significant wave heights of more than 5.4 metres, and

H = 0.80+0.23(2.60-B/d)+0.52(CB-0.60)+0.62(GM-0.70) metres

for vessels intended for fishing operations at significant wave heights less than 4.0 metres; if the significant wave heights are between 5.4 and 4.0 metres the values of H should be determined by linear interpolations, where in the above formulae:

B = as defined in Regulation 2(7)

d = maximum permissible moulded draught

CB = block coefficient

GM = initial metacentric height.

All dimensions are in metres and correspond to the deepest operating waterline.

Regeling
Internationaal Verdrag van Torremolinos voor de beveiliging van vissersvaartuigen, 1977
Soort
Verdrag
Geldend vanaf
02-04-1977
BWB-id
BWBV0003251
Versie
1977-04-02_0

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