This has been submitted to Obsidian, support ticket #5715. I thought it best to post here as well, in case anyone else is having this issue. I started the game with Dyrwoodian Sloop (like everyone does) and by about level 10, I had enough to purchase the Galleon. I'm playing in Story Mode as my time is limited, so it's been pretty easy to rack up the coin. Since switching to the Galleon every ship battle has frozen the game before the text prompts come up, prompting Windows to close the game. I switched back to the Sloop today and got through one ship battle (I immediately went to boarding) but the second time I was attacked the game froze again. I will update when I hear from Obsidian.