In PVP Does cannonfire seem to do a LOT less damage then reg game

[Dr. Zeppers]

This is normal.
If cannons were as effective in Ship vs Ship as they are in regular game vs NPC's ships would sink before they had a chance to say "Fire" half the time. When they first were testing it, they changed the damage done on the NPCs too, and quickly heard enough feedback on that to change those back. hehe

Where you hit is alot more important with SvS, keep hitting the same spot, your damage increases.