this request implies that a new or already existing block will propel a ship in the direction it is currently facing. as long as its not blocked by blocks
#a sail that works as a sail
dusk belfry
digital verge
gray aurora
this mod works well with sails https://www.curseforge.com/minecraft/mc-mods/ships-mod
maybe one of the vs2 addons could add a sail system similar to this, or a block that works kinda like a create mod windmill bearing where when activated all superglued blocks combine into stails but there could also be a gui to adjust speed and direction