I'm not sure if its a resizing issue or not but they are all looking a little soft to me...I can see what you were going for with the first/third but the boat is for me just too crammed into the corner of frame, and for a composition along these lines you really need to also see what the subject i.e. the boat is looking at, and your still a little too side on to get that PoV
On the second your getting there in fact you could have lost a little from the bottom of frame but that clump of dead stuff detracts if you cannot remove it prior to shooting it really needs to go in PP,
Sorry the say the B&W conversion has left the scene looking really flat..it has sucked the life out of the scene, a boost to contrast would help this but to be honest it's not really a scene that is suiting conversion in the first place..