Welcome Rinercl!
Cachalote is our resident pirate expert, though many of us collect the Pirate theme too.
My in-laws live in Friendswood, so I have some familiarity Houston. If you're just trying to restore your old ship, you can still get most parts direct from Playmobil, but the parts service in the US is unreliable. You might have better luck getting someone in Europe to order the parts for you and ship them over.
Playmodb's parts listing is the best, you shouldn't need to look further.
Keep an eye on eBay for parts or a second ship you can cannibalise to get yours up to spec. Also check Craigslist, if you're lucky sometimes whole batches of Playmo appear there, and your area might be quite active.
Good luck in your project!
Martin