Transport Publication TP 10943 E
Application
21. (1) This Part applies to all passenger vessels required to comply with the damaged stability requirements of the Hull Construction Regulations.
(2) The Part applies to all new and existing passenger vessels on 1 September 1991.
Stability Information
22. (1) The Master of the vessel shall be supplied with the data necessary to maintain sufficient intact stability under service conditions to enable the vessel to withstand critical damage. In the case of vessels requiring cross flooding the Master of the vessel shall be informed of the conditions of stability on which the calculations of heel are based and be warned that excessive heeling might result should the vessel sustain damage when in a less favourable condition.
(2) The data required to enable the Master to maintain sufficient intact stability shall include information which indicates the maximum permissible height of the vessel's centre of gravity above keel ( KG ), or alternatively the minimum permissible metacentric height ( GM ) for a range of draughts or displacements sufficient to include all service conditions. The information shall show the influence of various trims taking into account the operational limits.
(3) On completion of loading of the vessel and prior to its departure, the Master shall determine the vessel's trim and stability and also ascertain and record that the vessel is in compliance with stability criteria in relevant regulations. The Minister may accept the use of an electronic loading and stability computer or equivalent means for this purpose, or other methods which provide an equivalent degree of safety.
(4) Each vessel shall have scales of draughts marked clearly at the bow and stern. In the case where the draught marks are not located where they are easily readable, or operational constraints for a particular trade make it difficult to read the draught marks, then the vessel shall also be fitted with a reliable draught indicating system by which the bow and stern draughts can be determined.
(5) Where the Master is prepared to operate a vessel with a stability booklet containing an envelope of absolute maximums regarding stability and freeboard (both intact and/or damaged), which provide the required degree of safety, the Minister may accept this arrangement provided that the stability booklet is suitably endorsed to the effect that any load condition, which falls outside of the envelope contained in the booklet, must receive prior clearance from the owner before the vessel's departure. A copy of the condition should be forwarded to Transport Canada Marine Safety for record purposes.