This mini-book on how to tie Fishing Knots is one of a series of three pocket guides published by the RYA - the other two being on Sea Fishing Rigs and Sea Fishing Baits.
This handy guide will fit nicely into the pocket of your fishing jacket, and being spiral-bound and waterproof will come to no harm in your fishing bag or the cockpit of your boat.
In it, the author Jim O'Donnell explains by way of nicely drawn sketches and descriptive text, how to tie all the sea fishing knots you'll ever be likely to need - 18 of them in all.
But the instructions on crimping wire line (page 23) need a note of caution, as no distinction is made between single-strand and multi-strand wire.
Using crimps is fine for multi-strand wire (either bare or plastic coated) but they just won't hold in single-strand wire.
Solution? Always use the Haywire Twist for single-strand wire. Definitely not crimps!
Downrigger ~ The cranelike device incorporating a line-counter reel often seen on the sterns of sport-fishing boats, which lowers a trolling weight on a wire line to a pre-determined depth. The trolling line is attached just above the weight, which gets the lure down to depths that would otherwise be unachievable.