A World’s First in Underwater Repair:

press release
Wednesday, January 04, 2012

The insertion of a complete, prefabricated replacement hull section in a badly damaged ship at anchor. 
 
 

On Friday 22nd July, 2011 the Tsavliris Salvage Group urgently dispatched salvage tug Stevns Battler in response to a call for assistance from bulk carrier Navios Sagittarius (GRT: 38,849, DWT: 75,756), laden with 73,419 metric tons of iron ore pellets. The Sagittarius had run aground on the Tonneberg Banke, about 23.5 miles east of Frederikshavn, Denmark, while on passage from Finland to China. The salvage team arrived the same day and prepared a refloating/salvage plan, incorporating environmental and safety measures. On July 26th, a salvage plan was approved by the Danish authorities and on July 28th, after about 3,000 tons of cargo had been transferred to the lightering vessel, by pressurizing certain tanks and with the assistance of tugs, the Sagittarius was refloated.

 

On the 23rd of July, a Hydrex diving team contracted by the salvors had carried out a preliminary video inspection which found large penetrations, indentations and cracks in the hull, and heavily deformed plates. However, it was impossible to get a full picture of the damage with the ship still aground. The vessel was then towed to Frederikshaven for a detailed underwater inspection, extensive bottom repairs, and reloading of cargo.

Detailed inspection


With the Sagittarius refloated it was possible to carry out a detailed inspection of the hull and note all damage. Tsavliris had signed a Lloyd’s Open Form salvage contract with Navios and subcontracted several companies to carry out inspection and repairs. The chief subcontracting company for the inspection, planning and repair work was Hydrex. Tsavliris had previously contracted Hydrex to carry out a stern tube replacement on the bulk carrier Minoan Euro in Manila. Captain George Polychroniou, Tsavliris’ Operations Manager overall in charge of both salvage projects confirmed that, “The cooperation with Hydrex was excellent in both operations.” This was particularly important in a complex salvage operation which lasted three months and for which Hydrex mobilized 24 divers full time, in two shifts, for the duration of the operation, under the technical directions of Tsavliris naval architects and salvage master. The Hydrex team of 24 full-time divers was organized and assembled by Onno De Nooijer, Technical Services Officer for Hydrex in Antwerp, Captain Barend Visser, Tsavliris Salvage Master and Michalis Chourdakis, Tsavliris Technical Consultant, and headed up initially by Toon Joos, one of Hydrex’s most experienced diver/welders, who was able to provide much technical input and assistance to the naval architects during the planning stages. Toon was later replaced by Jan Botte who successfully led the Hydrex divers for the majority of the repair operation.

 

Thus it was Hydrex divers who examined the hull, took measurements and photographed and videoed the damage. They reported two very large holes in the hull, one about 5 x 5 meters aft on the port side and the other about 8 x 1.8 meters near the forepeak on the port side, as well as many smaller holes, cracks and indentations. The damage was very severe indeed.
 

Maritime Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter January 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

First Women's Expedition to the Arctic

Company "MyArctic-expeditions" organize the first women's expedition to the Arctic Ocean. The expedition will start on March 5 in the capital of the Nenets Autonomous

Topaz Responder Saves Refugee Migrants

Topaz Energy and Marine has emerged as an unlikely player in the effort to save refugee migrants risking their lives on the sea crossing from Turkey to Greece’s islands in order to reach Europe.

MHI's Entity to Oversee Material Handling Equipment, Engine and Turbocharger Businesses

Today Mitsubishi Heavy Industries, Ltd. (MHI) decided in principle to launch a new wholly owned entity to integrally oversee its current businesses in material

Technology

Norbulk Selects Parker Kittiwake’s Cat Fines Test Kit

Parker Kittiwake, a leading global supplier of asset control and protection technology, has today announced a significant order of its recently launched Cat Fines

European Consortium Launches Blue Nodules Project

On 1 February a European consortium launched a new Horizon 2020 project: Blue Nodules. This project addresses the challenge of creating a viable and sustainable

Seafarers help Sought to Improve Onboard Design

The Nautical Institute and CIRM (the principal international association for marine electronics companies) today launched a joint initiative to improve the usability

Bulk Carrier Trends

Globus Maritime Reclassifies Board Member

Globus Maritime Limited, a dry bulk shipping company, announced today that when Georgios Karageorgiou, a Class I director of Globus Maritime Limited  resigned on December 28,

Baltic Index Records New Low

The Baltic Exchange's main sea freight index, which tracks rates for ships carrying industrial commodities, registered a new all-time low for the ninth straight

Dry-Bulk Shipping: Hitting the Bottom

Dry bulk shipping companies being hit the hardest on account of the deteriorating business climate are likely to be swept by a new wave of bankruptcies, reports Nikkei.

Salvage

Shipbreaking Practices in 2015 Reveal Appalling Record -Report

Ignoring industry leaders and human rights and environmental organizations, ship owners continue to profit from dangerous and dirty shipbreaking practices on South Asian beaches in 2015,

Boxship Aground Near Port of Hamburg

A Chinese container ship that is one of the world's largest has run aground on the river Elbe near Germany's largest port Hamburg but shipping to the harbour continues as normal,

A2SEA Jack-Up Capsizes Off Denmark

A2SEA has announced that wind turbine installation vessel has capsized off the Danish coast due to harsh weather on Wednesday.    It has gone from bad to worse for A2SEA-vessel Sea Worker.

Casualties

Topaz Responder Saves Refugee Migrants

Topaz Energy and Marine has emerged as an unlikely player in the effort to save refugee migrants risking their lives on the sea crossing from Turkey to Greece’s islands in order to reach Europe.

USCG Issues Zika Virus Precautions

Recently, the World Health Organization designated the Zika virus as a global public health emergency. This has prompted questions from the maritime industry regarding

Boxship Aground Near Port of Hamburg

A Chinese container ship that is one of the world's largest has run aground on the river Elbe near Germany's largest port Hamburg but shipping to the harbour continues as normal,

Marine Materials

Norbulk Selects Parker Kittiwake’s Cat Fines Test Kit

Parker Kittiwake, a leading global supplier of asset control and protection technology, has today announced a significant order of its recently launched Cat Fines

AlphaEye Allows Real-time Audio Visual Support

Alphatron Marine’s robustly designed AlphaEye is a next generation service communication tool offering the capability to have an extra set of eyes “onboard.” With the AlphaEye,

SCHOTTEL Expands Repair Capacity

The newly extended repair facilities at SCHOTTEL’s German headquarters in Spay are now operational. The space was previously used solely for manufacturing new drives,

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Naval Architecture Pipelines Salvage Ship Electronics Ship Repair Sonar Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.0995 sec (10 req/sec)