Cool to see this topic has still updates a decade later
I haven't tried myself ClassicUO client and/or launcher. This is a nice workaround you have found there, @Iomega0318
However, when I take the latest OSI client (184.108.40.206), start it with UO Razor and setup an empty ServUO Pub 57.2 shard, well boats and galleons sail with smooth movement.
Have any of you guys tried without ClassicUO ?
The only difference I see with my version here above is they don't have British Galleon, but they finished cannons and boat fight very properly.
Let me know if I can help in any way, I'd be happy to contribute.