An English wooden fid, hand-turned from a single piece of dense hardwood (likely beech or fruitwood), used by sailors and sailmakers for splicing rope and separating strands of cordage. Also known as a marlin spike, it probably dates from the early 20th century. Incredibly tactile, the tool tapers from a fine point to a bulbous handle, and has a rich glossy patina built up through years of handling. See also the contemporary wooden pins in the body to give it extra strength (final two photos).
A beautiful piece of maritime history, it measures 54cm (21") long and weighs 255g (9oz).