Wrecks of the World II Wreck Remediation and Pollution Recovery – Case Studies Zach Malinoski

Factors Driving Wreck Removal Approach SUCCESSFUL WRECK AND POLLUTION REMEDIATION COST SCHEDULE TECHNICAL Minimize Cost? - Reduce schedule with innovative recovery approach/technology - Increase schedule with proven techniques Minimize Schedule? - Apply innovative recovery approach/technology - Increase workforce and equipment Minimize Technical Risk? - R&D innovative recovery approach/ technology before application - Increase workforce and equipment

JACK-UP MODU - GoM Drifted 5000’, capsized, and sank at 113’ water depth Most fuel tanks damaged during IKE Arrangement & depth allowed traditional recovery techniques Challenges- – Limited floating resources in wake of Ike response – Limited weather window

JACK-UP MODU - GoM Systematic inspection via divers & taps Excavation required to access smaller tanks and barrel stores ~36K gallons recovered 2008 Additional pockets discovered & removed in 2009 when recovery efforts continued

Hot Tap Recovery

Dredger – Sri Lanka May 2009 – Aground on tetrapod breakwater during monsoon Weather prevented recovery efforts until January 2010 POLs observed released from May onward

Dredger – Sri Lanka Wreck severely damaged during monsoon Survey discovered one small hydraulic oil tank intact – oil was removed via tap In-situ Cut Up – pieces sized to keep fuel/POL tanks intact

Challenges for World Wide Wreck Removal Create environment that encourages quick POL recovery – Recovery rates higher and costs lower when POLs recovered from wreck instead of water Limit responder third-party liability exposure Cost Effective Assets & Technologies for: – Remote Sensing – Saturation Diving – Deepwater Recovery – Surface Platforms capable of operating in adverse weather conditions