Saw this film last night. It's set in Australia and concerns a group of four friends coming back together, two are a couple and two were a couple who had split for a time. One of the guys runs his own business delivering boats to rich clients. The other three are meeting him to go on a boat trip together. There is a fifth person who has been hired as a captain's mate. Now, the film sets up nicely but you just know that trouble is on the way. And the film cleverly uses the environment, so that the audience sees what a hostile environment the sea can be and how vulnerable we are, even in idyllic weather. I enjoyed this film, it feels similar to Frozen - about the friends stuck in a ski resort.