The biggest injuries in swimming are shoulder injuries. All the exercises we do in land training help prevent these. Here's an interesting article on shoulder injuries and how to help prevent them to back up what we do.
http://watersportnews.com/news/story/203925/shoulder-maintenance-important-to-swimmers-at-all-levels/full_story.html
Speaking of prevention, here's my annual early warning about the winter blues. When the nights draw in and the temperature drops its important to stay focused and positive, less sun means less vit D so supplement, increase vit C and Omega 3 intake to help the immune system and make sure you wrap up after training especially in Long Eaton SC hoodies available from Graham (see the side of this blog)