dont think so i mean it should work on the same principle as a unit in NTW
several guns of different calibres stand for different ships.
different abilities in boarding assaults perhaps depend on crew, for intance pirates, marines etc all have different boarding abilties. shiåps would have diffrent speeds too. problems are really how to get units to work on sea whilst having battle maps that also include land without the ships moving over land too. etc
realistically, its also bad that we can never have storms or bad sea weather nor can we make winds effect the speed or movement of the ships as they would have in the age of sail.
but boarding would still work on the skirmish/hold/engage at will principles...

malcolm im interested...how far have/did you come in your ideas?