Ahoy captain!
Deck looks super fun. I have an ABB pirate deck myself and I love it. So much fun and flavour.
I gotta say though, 23 lands seems super low, especially in a deck with the average cmc of over 3. I've got a
Jhoira, Weatherlight Captain deck with an average cmc of under 1.5 and I'm still running 31 lands.
Other than that, you've got all the important pirates as far as I can see. Depending on how pure you're looking to keep the deck,
Changeling Outcast could be a really strong include. Technically a pirate, unblockable, 1cmc so keeps the curve down. Also things like
sleep and
tempest caller can do a lot of work in this deck.
Might be nice includes if you're willing to bend on the theme slightly. Totally get it if that's not what you want to do though. I first built this deck with all these effective, synchronous cards then took them all out to go full pirate. Sometimes that's just more fun.
Whatever you decide though, I hope you have as much fun with your pirates as I do with mine.