OOS International’s semi-submersible crane, construction, and accommodation vessel, the OOS Gretha, has completed a subsea lift of a broken off gangway offshore Brazil.
OOS International said that the OOS Gretha completed the gangway lift on September 29 in the Campos Basin, offshore Brazil.
According to the Dutch provider of offshore accommodation solutions, the gangway broke off several months ago and the client, Brazilian oil company Petrobras, requested that OOS International assists with the recovery.
Before the lift, the OOS Gretha was connected to a production platform to conduct renovation and maintenance operations. To safely lift the gangway, the vessel was disconnected from the platform. After completion, the gangway was placed on the deck of the vessel to prepare it for transport ashore.
After the operations were complete, the vessel was again connected to the production platform to resume maintenance ops.
Offshore Energy Today has reached out to OOS seeking more info on how the gangway ended up on the bottom of the sea in the first place. We will update the article if we get a response.
As for the OOS Gretha which retrieved the gangway, it is a modern semi-submersible accommodation crane vessel equipped with two Huisman cranes of 1,800 tonnes each and accommodation for 618 persons on board.
The vessel, along with the OOS Prometheus, started working for Petrobras in 2014 on a four-year contract.
Offshore Energy Today Staff