No sub min etc for Sea King, Wessex etc, and they have aquitted themselves ok most would consider?
As to what role, the Jungly role perhaps?
847 Lynx has no flot kit, and that is on the most famously torpedo mimicking helicopter ever made. (Plus, the grey lynx flot kit never seems to work anyway!)
No prob with Chinook landing gear, except as BossEyed aludes, if you cannot judge the round down successfully!
Chinooks are very powerful a/c with very strong control power and as such have a lot of advantages when operating off decks, to say nothing of the wind direction independance.