Transport Publication TP 10943 E
Application
19. (1) This Part applies to all passenger vessels, required to comply with the intact or damaged stability requirements of Part II.
(2) In the case of existing passenger ships the lightship survey will be due at the first drydocking on or after 1 April 1991.
Lightship Survey
20. (1) At periodical intervals not exceeding five years, a lightweight survey shall be carried out on all passenger vessels, except as provided in (3), to verify any changes in lightship displacement and longitudinal centre of gravity. The vessel shall be re inclined whenever, in comparison with the approved stability information, a deviation from the lightship displacement exceeding 2% or a deviation of the longitudinal centre of gravity exceeding 1% of the length is found.
(2) In cases where the stability characteristics of a passenger vessel (intact and/or damaged) are marginal or where a ship has been granted an exemption from the minimum stability requirements (intact and/or damaged) the lightship survey interval may be reduced.
(3) For vessels of not more than 24 metres in length the lightship survey may be replaced by a declaration signed by the owner or the Master of the vessel. This declaration shall include in table format all the changes made to the vessel since the last inclining, with a description of change and weight and centre of gravity information. This declaration shall also be accompanied by any available relevant information such as photographs, sketches, etc. If the variation in lightship displacement exceeds 2% or the variation in centre of gravity may have a negative impact on the stability of the vessel, the owner shall demonstrate that the vessel stability remains adequate to perform its intended operation.