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Ardent Performs Largest Wreck Removal Project of 2016

Salvage company Ardent completed its largest wreck removal project of the year in November, when it removed the jack-up Troll Solution from the seabed of Mexico’s Bay of Campeche. Weighing about 7,000 tons, the jackup tilted while attempting to carry out

maintenance work related to the Pemexoperated Caan Alf production platform. According to Mexico’s national oil company Pemex, the accident occurred when one of the Troll Solution’s legs failed. The jack-up rig subsequently collapsed and sank into the seabed in about 30 m of water depth. After sinking, the Troll Solution came to rest within two meters from the active CaanAlf platform. Prior to Ardent’s involvement, unsuccessful efforts had been made to refloat and salvage the jack-up. Houston-based Ardent, created by the merger of Crowley Maritime’s Titan Salvage and Svitzer Salvage, deployed a number of assets to the Troll Solution operation. Among them was the Conquest MB-1 crane barge with a maximum lifting capacity of 1,400 tons. The Conquest MB-1 is no stranger to big salvage operations having previously been involved in the massive salvage and removal of the cruise ship Costa Concordia. Other assets deployed by Ardent included a 1,000-ton hydraulic wreck grab from the Netherlands and a number of support vessels from both the U.S. and Mexico.

The operation used Ardent’s newly designed Guided Guillotine to dismember the jack-up—instead of cutting with more conventional methods such as push or pullcut with chains or diamond wire. Conventional guillotine cutters are restricted to operations above the surface. The Ardent Guided Guillotine functioned underwater with the precision to cut the Troll Solution jack-up into the required lift pieces. The Ardent salvage team cut the deckhouse into six pieces with Ardent Chain Pullers, and the vessel’s hull into 31 pieces— subsequently lifting those from the seabed with the Conquest MB-1. “The main hurdles to overcome were, how to best cut the jack-up into sections without fabricating an elaborate structure and boring holes underneath the jack-up through the seabed was improbable due to obstructions,” explained Shelby Harris, Ardent Americas Operations Director. “We had to apply ingenuity to use our chain cutting techniques on the deck house in a less than conventional method, and the Ardent Guided Guillotine sectioned the hull. The method worked very well.”

U.S. Coast Guard Awards First U.S. Type Approval for BWMS Norway’s Optimarin has been issued

the first U.S. type-approval certificate for ballast water management system by the U.S. Coast Guard. The Coast Guard Marine Safety Center issued the certificate to Optimarin after its application for U.S. type approval was reviewed and determined to meet the requirements of the Coast Guard’s type approval requirements contained in 46 C.F. R. § 162.060. “While this is a significant milestone, it is the first of multiple system approvals that are needed to mitigate the threat of harmful aquatic invasive species,” said Rear Adm. Paul Thomas, Assistant Commandant for Prevention Policy. “One size does not fit all,

so we will continue to evaluate other systems submitted by multiple manufactures with the intent to provide options that meet shipping’s varying needs.” The Coast Guard says that while this certification provides vessel owners and operators with a type-approved system to meet the ballast water discharge standard, there are other ways that vessels can comply with U.S. ballast water management regulations. These include: • Temporary use of a foreign type-approved BWMS that has been accepted by the Coast Guard as an alternate management system (AMS) (5-year limitation) if installed in compliance with 33 CFR Part 151

• Use of ballast water obtained exclusively from a U.S. public water system • Discharge of ballast water to a reception facility • No discharge of unmanaged ballast water inside 12 nautical miles.

MARITIME Trivia­– Question #44: What was discovered in the stomach of a sperm whale after it was taken near the Falkland Islands by the whaler Star of India in 1891? The first sailor or lubber that correctly answers the Maritime Trivia question will receive a color J. Clary collector print. Email your guess to November’s trivia question: How big was the eye of the Typhoon Carmen? The eye of the monster Typhoon Carmen that passed over Okinawa on August 20, 1960, was verified by radar as having an eye with a diameter of two hundred nautical miles. The correct answer was submitted by Corey Hooker of Burlington, NC.

10 Marine Log // December 2016

December 2016 Marine Log  
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