U.S. NAVY SALVAGE REPORT DEEPWATER HORIZON ... - ESSM
U.S. NAVY SALVAGE REPORT DEEPWATER HORIZON ... - ESSM U.S. NAVY SALVAGE REPORT DEEPWATER HORIZON ... - ESSM
Chapter 5: Operations 5-2 Near Shore Skimming 5-2.1 Systems Used. SUPSALV’s near-shore skimming capability is provided by MARCO Class V skimmers. The two models employed to the Gulf Region were: System # P16400 - a Class V 36-Foot Sorbent Belt Oil Skimmer. (Wide body) This is a 36-foot aluminum vessel that has a modular pilot house and is fitted with a rotating sorbent belt for oil recovery. The skimmer is self-propelled and can function in stationary, free skimming, or towed V-boom configurations. When used offshore or in open water, the skimmer is towed in a V-boom configuration by two boom handling boats (SUPSALV item No. P03100) or vessels of opportunity (commercial fishing vessel or work boat). This skimmer has a 12 foot beam and requires special shipping permits which are issued state by state. System # P16100 - a Modular Vessel Skimmer System P16100. This is a modular 36-foot aluminum skimming vessel fitted with a rotating sorbent belt for oil recovery. The system is packaged in three modules: two separate 8’ x 36’ modules plus a cabin top on a separate pallet. The first large module contains the skimmer body. The second large module contains a separate sponson rack unit. The sponson rack unit contains the skimmer sides, boom, spill recovery bladder, spare parts, tools, rigging, and the ancillary equipment necessary to complete the system. The design of the system permits rapid field assembly with minimal support. The skimmer is self-propelled and can function in a stationary, free-skimming mode, or towed in the normal operational V-boom configuration. Figure 5-6. MARCO Class V being towed by its booms by two gulf shrimpers. 5-6
Deepwater Horizon Oil Spill Response 5-2.2 Near Shore Employment. These systems were used interchangeably and deployed across the entire area of operation. Eighteen of these systems were deployed across the Mississippi, Alabama, and Louisiana coast including two that were shipped from Alaska on May 11th. Skimmers deployed near harbors, like Grand Island, LA and Pascagoula, MS, were deployed and performed skimming operations near shore and in the harbors. Those deployed to offshore locations, like Dauphin Island or off Pensacola, FL, were deployed on barges which provided a safe platform for these low speed vessels. Advantages in deploying with a barge equipped with a crane included: • Ability to stay on site overnight (MARCO Skimmer hoisted onboard barge). • Easier provision of logistics (fuel, crew facilities). • Ability to survive unexpected high seas and sustained winds. Figure 5-7. MARCO Class V loaded on jack-up barge Manta Ray on 9 May 2010. The Jack-up barges were instrumental in forward deploying the near shore skimmers to remote locations such as Dauphin Island. MARCO skimmers normal mode of operation is to be towed by two assigned tow boats. SUPSALV deployed nine boom handling boats to the Gulf and requested additional vessels to support the remaining skimmer deployment. The most suitable vessels provided were commercial Gulf fishing vessels. These boats typically had at least 300 HP engines, a strong attachment point for towing, and true offshore sea keeping capability. Initially, the Federal 5-7
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Deepwater Horizon Oil Spill Response<br />
5-2.2 Near Shore Employment.<br />
These systems were used interchangeably and deployed across the entire area of operation.<br />
Eighteen of these systems were deployed across the Mississippi, Alabama, and Louisiana coast<br />
including two that were shipped from Alaska on May 11th. Skimmers deployed near harbors,<br />
like Grand Island, LA and Pascagoula, MS, were deployed and performed skimming operations<br />
near shore and in the harbors. Those deployed to offshore locations, like Dauphin Island or off<br />
Pensacola, FL, were deployed on barges which provided a safe platform for these low speed<br />
vessels. Advantages in deploying with a barge equipped with a crane included:<br />
• Ability to stay on site overnight (MARCO Skimmer hoisted onboard barge).<br />
• Easier provision of logistics (fuel, crew facilities).<br />
• Ability to survive unexpected high seas and sustained winds.<br />
Figure 5-7. MARCO Class V loaded on jack-up barge Manta Ray on 9 May 2010.<br />
The Jack-up barges were instrumental in forward deploying the near shore<br />
skimmers to remote locations such as Dauphin Island.<br />
MARCO skimmers normal mode of operation is to be towed by two assigned tow boats.<br />
SUPSALV deployed nine boom handling boats to the Gulf and requested additional vessels to<br />
support the remaining skimmer deployment. The most suitable vessels provided were<br />
commercial Gulf fishing vessels. These boats typically had at least 300 HP engines, a strong<br />
attachment point for towing, and true offshore sea keeping capability. Initially, the Federal<br />
5-7
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