Luftforsvaret training.
http://forsvaret.no/sites/artikkelbi...n2.jpg?lastned
Recruitment swim test on their website is 400m and also 25m underwater.
There seems to be a rescue swimmer tradition in Norwegian Air Force. The guy I met is Senior Redningsmann/Senior Rescuer on his card yet during conversations (English) he routinely referred to himself and others as rescue swimmers.
I have no information about contractor procedures in Norway.
I think a lot of this is about what risk profile your organisation and your society accept. Nobody's way is wrong.