In a sombre but stirring tribute to the US Coast Guard, Kevin Costner stars as a veteran rescue swimmer-turned-trainer who becomes a mentor to cocky new recruit Ashton Kutcher.

The acting, script, special effects and convincing rescue scenes are all very well done in a film that delivers its heartfelt message and positive life lessons with great conviction.

Costner gives an effortless performance and the usually lightweight Kutcher works wonders with something tougher to tackle, while director Andrew Davis handles the action with style and confidence.