When posting up images, try and put a space between them and number each, as it makes it easier for others to see and comment on. I know you only have 2 so numbering seems redundant, but getting in the habit now will be good for when you are posting 5-6.
1- I don't like the composition at all. the main boat is smack in the middle of the picture. While things centered can sometimes work, generally they don't. Definatly read the links posted by Samanax. Rule of thirds, angles, curves, shapes, symetry... all things to look for that this picture lacks.
Fill the frame with your subject or play with angles and DOF so that whatever you do enhances and draws attention to your main image.
2- I don't like the angle this is at, nor the BW conversion nor the sharpness of the image.
- angle - when shooting things like this, get in the middle! You are often looking for lines that draw the eye to a certain point and a picture like this, with benches on either side, the lights above and such can all be perfectly balanced in an image to lead the viewers eye to the cross at the back.
- BW - looks like a lack of contrast in the image... its too grey, middle of the road.
- focus - nothing is really in focus. Might be due to the BW conversion, but what aperture did you shoot at? use a smaller one. Was there camera shake? use a tripod