Cargo-handling, hose-handling, connection and disconnection (on tankers, supply vessels, etc. ), anchor-handling (on offshore vessels), bunkering, enclosed space entry, manual handling of stores, spares, engine parts, etc., berthing and unberthing, working aloft, working on pressure vessels or systems which could be under pressure, hot work, electrical work, isolation of systems, etc. (This answer should be adapted by the reader for special ship types. )