As Timo has astutely observed, this does appear to be one of those 19th century training weapons, which did not of course follow any sort of regulation or pattern and were privately produced usually. Most of the maritime weaponry was privately produced as well in these earlier times in the 19th century for commercial vessels .
I had one of the British military training swords with a thin, stiff blade and a huge steel bowl, I think dated around 1911, but it was fascinating.
This one Carlos has a unique, rugged charm to it that brings to mind things nautical and though far later and fancifully, surely has a 'pirate' ring to it!
Wait til Mark Eley sees it!!!