Regulation 7 Surveys of cargo ship safety equipment
A United Kingdom cargo ship of 500 gross tons or more engaged on international voyages shall be subject to the following surveys of its life-saving appliances and other equipment—
before the ship is put in service, a cargo ship safety equipment initial survey;
at the intervals specified in Merchant Shipping Notice MSN 1751 a cargo ship safety equipment renewal survey;
within three months before or after the second or third anniversary date of a Cargo Ship Safety Equipment Certificate, a cargo ship safety equipment periodical survey; and
within three months before or after each anniversary date of the ship's Cargo Ship Safety Equipment Certificate, other than where a periodical survey is required to be carried out within that period, an annual survey.