An inspection certificate is good for four years, after which the vessel must again be inspected; for this purpose the vessel will have to be either dry docked or beached. The Inspector may, at this time, require the tailshaft to be withdrawn and the engine overhauled if it appears to be in poor condition.
It is probable that, before the four-year period has expired, the vessel will be either dry docked or beached for reasons other than inspection. The owner may, on such occasions, request inspection; if the hull if found by the Inspector to be in good condition, credit will be given for this intermediate inspection when the four-year inspection is due.
In any case, an owner should inform the Ship Safety office at least a week before the certificate expires, so that arrangements can be made for the Inspector to carry out inspection.
The procedure that the Inspector will follow during this inspection is given in sections 44 to 50 of the Regulations.
To avoid inconvenience and delay, the person in charge shall ensure, prior to the Inspector's arrival, that
(a) The life-saving, fire-extinguishing and navigating equipment is in good condition and complete;
(b) the fire extinguishers are recharged;
(c) the life rafts are serviced;
(d) the pumps and other fittings are in good operating condition;
(e) the vessel is beached or dry docked;
(f) all spaces within the ship are opened up and cleaned;
(g) the propeller is removed and the tailshaft completely withdrawn if this is required;
(h) all sea cocks are opened up, cleaned and the seats, etc. are in good condition; and
(i) the main engine is opened up for inspection when required and all parts cleaned; or, where the engine has recently been overhauled by a competent mechanic, there shall be available to the Inspector, a letter or certificate signed by the mechanic, stating
(i) that the engine has been overhauled,
(ii) the parts that have been renewed
and
(iii) that the engine is in good working order.
When the engine is not dismantled for inspection, it is to be put in operation so that the Inspector can judge its running condition.