The cannon suprised me, because I thought this was a European release, and I can still buy the normal cannons on DS - howeveer i don't actually fire the cannons often, so it doesn't bother me much.
Once I had mine assembled, the sail and mast looked too small for the hull. However to make it a playable size this is OK - any bigger and it'd be difficult to get at the deck.
It's a great ship all told, and I hope to get a couple more for my fleet.