1.1 Following SOLAS
regulation I/7, the Survey Guidelines under the Harmonized
System of Survey and Certification (resolution
A.997(25)) currently specify that inspection of a passenger
ship's bottom, as required by SOLAS regulation
I/7, should be carried out annually, with two inspections in
dry-dock in any five-year periodfootnote.
Where acceptable to the Administration, the minimum number of inspections
in dry-dock of the outside of the bottom of a passenger ship (which
is not a ro-ro passenger ship) in any five-year period may be reduced
from two to one. In such cases, the interval between consecutive inspections
in dry-dock shall not exceed 60 months.
1.2 It is recognized that technological advances
have been made in regard to corrosion resistant materials, quality,
endurance and effectiveness of hull coatings, repair in water by means
of protected environment such as temporary cofferdam, implementation
of effective five-year maintenance regimes and also the effectiveness
of in-water survey (IWS) technology overall.
1.3 The following guidance has been developed
to ensure that sound technical judgement is exercised by Administrations
in a uniform manner, when allowing passenger ships to have an in-water
survey in lieu of bottom inspection in dry-dock.
1.4 The guidance for in-water survey is intended
to be applied to passenger ships of 15 years of age or lessfootnote which are not ro-ro passenger ships. Some
aspects of the guidance may also be useful in ascertaining suitability
of any in-water inspection of passenger ships.