Interesting and obvious subject, shot on such a nice day. Overall the picture feels too dark though - darker than it should be in such bright daylight. The black frame on top and bottom add to that feeling and don't help the picture. Also, feels like the horizon is tilted (probably not, but feels like it)
Nice sky contrast, good clouds. Subject could me more significant, and the several smaller boats are distractions. Watch your horizon, too, it looks off horizontal by a couple of degrees...makes the viewer uncomfortable.