Hi Paul,
i imagine you are talking about the ships boats on the Davits... 7 Of..??
these are not really classified as lifeboats, there working boats and used to erect the torpedo nets and patrol round the ship when anchored.
there not actually secured in place, they hang on there ropes that are connected to the Davits through pulleys.
on the davits i made some tieoffs (cleats) and wrapped the rope (string) around the cleats.
hope this is what you were asking for, or do you mean the torpedoboats and Steam launches on the boatsdeck.