A quite unlucky ship. Launched in 1981 to support research bases in Antarctica she has been converted into hospital ship during Falkland war (1982). At the end of the war she returned to operate as before but sunk in 1989 close to US base Palmer.
PS: I find no specific references for the underwater hull and, tehrefore, I deducted the dawing from the picture. It is missed the water intake visible in a picture taken few minutes before she disappered but I don't know its position along the hull.