3.1.1 Between periodic surveys carried out by LR’s Surveyors the Owner is
expected to perform inspections and checks in accordance with a maintenance schedule
agreed with Lloyd’s Register.
3.1.2 In general, a classed submersible, diving system or deck compression
chamber, and associated important equipment, are to be inspected and checked at
intervals of about one month.
3.1.3 Manned submersibles, including wet submersibles, should be inspected and
checked before each dive. In the case of those making more than one dive during a
period of 24 hours without need for replenishment or replacement of on-board
life-support systems or power supplies, full checks and inspections need only be
made before each launch.
3.1.4 An unmanned submersible should be inspected and checked before each
launch.
3.1.5 Steel cables, or fibre or nylon ropes, of tethered submersibles and those
used for towing, lifting or lowering other types of submersibles, should be checked
before each dive and should be inspected at least once per month. The cables and
ropes are to be renewed at approved intervals. Where renewal is also dependent on a
specified maximum number of lifts, these are to be carefully recorded and totalled.
3.1.6 Manned habitats which are entered only occasionally should be inspected
and checked before and during each entry.
3.1.7 The log book for each classed unit is to be maintained properly and in
accordance with operating instructions. The log book is to be kept in a safe place
and not carried or kept on the submersible.