This would be a feature in the server settings. You would be able to switch it on or off.
When sailing a ship, players can switch between 1st and 3rd person. I think that making it possible to lock the view to 1st person when sailing can be a interesting feature.
Because it will add a bit more realism to sailing the ship. Especially for competive gameplay with clans. On public servers you could just turn this feature off might it be a issue.
This option would only be for when someone is using the wheel on the ship. When doing anything else players can still switch between 1st and 3rd person.
Let me know what you guys think.