Thanks for that... had found it myself just this morning and have printed it. Seems straightforward enough.
I take it you've not done this yourself yet.
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
1984 Fast/Nicholson 345 "FastForward"