A cynical reading of the ad (which really only announces an intent and offers the chance to register) is:
Wannabies apply - we'll train you and pay you a pitance
FOs - join Bond and fast track to captain
.... and then stay in those postions for 10 years or till we expand.
Interesting further gen in the BP Jigsaw thread which casts doubt on the BP contract's long term future.
Interesting that they are operating out of 'BAS Towers' at Staverton, since though the brothers had to stay onshore for 2 years, BAS have to stay out of the North Sea for 5. I hope they have a decent chinese wall.