It would probably make a good crow bar. I've an old pair of 16mm torsion bars from a 205 axle that I sharpened to a chisel point and they are now my favourite pry bars.
what has it come off a boat? I avoid keeping scrap I cant use very soon as it soon mounts up (dug out a big box of bar ends out the other day and inside hidden away was a few actually use full bits I didn't know were even in there) but a big pry or digging bar could be done in just a couple of hours, if you have a use its then worth giving space as tools always come in