1 Unless expressly provided otherwise, this part
applies to gas carriers constructed on or after 1 July 1986 including
those of less than 500 gross tonnage. Such gas carriers shall comply
with the requirements of this part in addition to any other applicable
requirements of the present regulations.
2 Any gas carrier, irrespective of the date of
construction, which undergoes repairs, alterations, modifications
and outfitting related thereto shall continue to comply with at least
the requirements previously applicable to the ship. Such a ship if
constructed before 1 July 1986 shall, as a rule, comply with the requirements
for a ship constructed on or after that date to at least the same
extent as before undergoing such repairs, alterations, modifications
or outfitting. Repairs, alterations and modifications of a major character,
and outfitting related thereto, shall meet the requirements for a
ship constructed on or after 1 July 1986 in so far as the Administration
deems reasonable and practicable.
3 A ship, irrespective of the date of construction,
which is converted to a gas carrier shall be treated as a gas carrier
constructed on the date on which such conversion commenced.