Marlin spikes are used extensively in sailing for tying and untying knots. There is a fairly detailed section in the Ashley Book of Knots on how to use them to tie turk's head knots, there are plenty of online resources on how to use them to tighten and loosen knots. I make a variety of sizes, many of which are custom orders and don't show up on my web site. If there is a marlin spike pattern that isn't shown (baring copying another makers work) please let me know and I should be able to make on for you.
This hand machined marlin spike is made with hex brass and grade 2 titanium. The spike and butt are made from grade 2 titanium, the handle is made from brass. The core of the spike is grade 8 all thread.
The handle is 5/8” across the flats, the spike is 6” long.
