Captains should have rights but also have limits. For example a captain should have punishment but they should only punish if required. What I mean by that is if a sailor decides to talk freely he should not be whipped. But I agree that captains should have rights so the voyage will be successful and controlled.
A sailor should have rights too. They should be able to speak for them self and not be a slave to the captains. What I mean by that is sometimes someone might be pushy or controlling and sort of take over on a ship that power should be limited so the sailors can have some sort of freedom while on board.