11.—(1) This regulation does not apply to ships of Classes XI and XII.
(2) Subject to paragraphs (3) and (4), on a ship to which this Part applies, where—
(a)life-saving appliances or arrangements are replaced; or
(b)the ship undergoes repairs, alterations or modifications of a major character which involves replacement of, or any addition to, its life-saving appliances or arrangements,
the replacement or additional life-saving appliances or arrangements must, so far as is reasonably practicable, comply with the requirements of Part B of Chapter III.
(3) Any life-saving appliance or arrangement complying with the requirements of Part B of Chapter III is not required to comply with the requirements of Merchant Shipping Notice 1676 (Amendment 1) which would otherwise apply.
(4) Where—
(a)a survival craft, other than an inflatable liferaft, is replaced but its launching appliance is not; or
(b)a launching appliance for a survival craft, other than an inflatable liferaft, is replaced but the survival craft is not,
the survival craft or the launching appliance (as the case may be) must be of the same type as that replaced.
(5) For the purposes of paragraph (4), “survival craft” means a craft capable of sustaining the lives of persons in distress from the time of abandoning the ship.