It was usually satin, not too shiny. Also there were finishes other than paint. Navy ships were pretty well maintained. When modeling a naval sailing ship, prim and proper is the way to go.
For instance, on HMS Victory, there were close to 1,000 men in the crew, as 100 guns with 9 men each, even accounting for the fact that a maximum of 50 guns or so would be fired at a time, meant that there were a lot of hands unemployed on a ship that probably took less than 100 to sail.
Idle hands are the devil's etc.
Bounty is a special case, but as Bligh was a tyrant, again well maintained I am sure.