now that was a big cross wasn't it :-), page-7

re: berge helene It's a STATIONARY platform H.... Stationary.
It will not collide with anything, unless an iceberg comes drifting down from the Arctic haha.
It's a storage and bypass vessel between the wells and the transportation (double skin) vessels.
It stays at anchor, collects oil then pumps it on to the waiting tankers.
Relax.