On
5 Dec 2012, Baltic Ace collided with the Cyprus-registered container ship
Corvus J in the North Sea while underway from Zeebrugge, Belgium, to Kotka,
Finland with a cargo of about 1,400 Mitsubishi cars likely headed to the
Russian market.The incident took place some 40–50 kilometres (25–31 mi) off the
Dutch coast south of Rotterdam on one of the busiest shipping lanes in the
world at 18:15 GMT. Sources ascribed the cause of accident to be ‘human
error’. Immediately after the collision,
Baltic Ace began taking on water, capsized and sank within 15 minutes in
shallow waters. There were human
casualties too ~ Corvus J was severely damaged and her bulbous bow was bent,
but she was not in danger of sinking and participated in the search for survivors.
Marine salvage is the process of recovering a ship and its cargo
after a shipwreck or other maritime casualty. Salvage may encompass towing,
re-floating a vessel, or effecting repairs to a ship. Today, protecting the
coastal environment from spillage of oil or other contaminants is a high
priority. Before the invention of radio, salvage services would be given to a
stricken vessel by any ship that happened to be passing by. Nowadays, most
salvage is carried out by specialist salvage firms with dedicated crew and
equipment.
The legal significance of salvage is that a successful salvor is
entitled to a reward, which is a proportion of the total value of the ship and
its cargo. The amount of the award is determined subsequently at a
"hearing on the merits" by a maritime court in accordance with
Articles 13 and 14 of the International Salvage Convention of 1989. The common
law concept of salvage was established by the English Admiralty Court, and is
defined as "a voluntary successful service provided in order to save
maritime property in danger at sea, entitling the salvor to a reward"; and
this definition has been further refined by the 1989 Convention.
Originally, a "successful" salvage was one where at
least some of the ship or cargo was saved, otherwise the principle of "No
Cure, No Pay" meant that the salvor would get nothing. In the 1970s, a
number of marine casualties of single-skin-hull tankers led to serious oil
spills. Such casualties were unattractive to salvors, so the Lloyd's Open Form
(LOF) made provision that a salvor who acts to try to prevent environmental
damage will be paid, even if unsuccessful. This Lloyd's initiative proved so
advantageous that it was incorporated into the 1989 Convention.
All vessels have an international duty to give reasonable
assistance to other ships in distress in order to save life, but there is no
obligation to try to salve the vessel. Any offer of salvage assistance may be
refused; but if it is accepted a contract automatically arises to give the
successful salvor the right to a reward under the 1989 Convention. Typically,
the ship and the salvor will sign up to an LOF agreement so that the terms of
salvage are clear. Since 2000, it has become standard to append a SCOPIC
("Special Compensation - P&I Clubs") clause to the LOF, so as to
circumvent the limitations of the "Special Compensation" provisions
of the 1989 Convention.
"Salvors" are Professional seamen and engineers who carry out salvage to
vessels that they do not own, and who are not members of the vessel's original
crew. When salving large ships, they may use cranes, floating dry docks and
divers to lift and repair submerged or grounded ships, preparing them to be
towed by a tugboat. The goal of the salvage may be to repair the vessel at a
harbour or dry dock, or to clear a channel for navigation. Salvage operations
may also aim to prevent pollution or damage to the marine environment.
Additionally, the vessel or valuable parts of the vessel or its cargo may be
recovered for resale, or for scrap.
Smit
Internationale N.V. (or Smit International) is a Dutch company operating in the
maritime sector. The company was founded in 1842 by Fop Smit as a towage
company with only the 140 horsepower paddle steamer tug Kinderdijk. It is now
part of Royal Boskalis Westminster N.V. a leading global dredging and offshore
contractor and maritime services provider. With origins in the Netherlands, they
have been operating for over 100 years.
The
vessel in first para - MV Baltic Ace was a Bahamian-flagged car carrier that
sank in the North Sea on 5 December 2012 after a collision with the
Cyprus-registered container ship Corvus J. Built by Stocznia Gdynia in Poland,
the ship had been in service since 2007.
Baltic Ace was a car carrier, a roll-on/roll-off ship designed to transport
vehicles in a large, fully enclosed garage-like superstructure running the
entire length and width of the vessel. She had eight cargo decks of which two
decks (3 and 5) could be hoisted up to increase the clearance of the decks
below to 4.8 metres (16 ft) for large vehicles. Her car capacity, measured in
RT43 units, was 2,132. For loading and unloading cargo, Baltic Ace had a stern
ramp for normal ro-ro berths and a stern quarter ramp for harbours with no
specialized cargo handling facilities.
She
was propelled by a single 5.84-metre (19.2 ft) nickel-aluminum alloy fixed
pitch propeller directly coupled to the main engine. Calling ports in the
Baltic Sea regularly, Baltic Ace was strengthened for navigation in ice and
held a Finnish-Swedish ice class1A. She was classed by Det Norske Veritas.After
the collision, she went into the sea and was resting in sea bed – not so deep,
estimatedly around a depth of only 35
metres with its cargo including 1400 cars – some costly luxurious ones .. ..
there was also substantial quantity of oil, which created some disturbance to
marine environmentalists.
In
Mar 2014, in its largest ever salvage
award the Dutch Ministry of Infrastructure and the Environment contracted
Boskalis and its partner Mammoet Salvage for the wreck removal operation. The concern was that the ship had some 540,000 liters of pollutants on board
such as heavy fuel oil and lubricants and posed quite a threat to the
environment. In addition, of course, there was also the petrol, oil, batteries
etc. in the vehicles themselves. Furthermore, this is a very busy shipping lane
so the wreck was certainly a hazard to vessels, given that it was so close to
the surface. The wreck therefore was closely monitored by the Dutch and Belgian
coastguard authorities.
The
contract was to be completed before end 2015 ~ North Sea offered its share of
complications as work normally could be done only during Apr to Sept. For
taking out the oil, the salvors used hot tapping with a heating system. In this process, the oil is heated with inserts in the bunker tank.
Steam is run through these inserts, which are cylinders of 2 meters long and 30
cm in diameter. The steam plant was installed on a barge and provided constant
heating to create the flow of oil in the tank. Once all remaining oil had been
removed from the wreck, the vessel was cut into 8 separate pieces using a
cutting wire and raised from the seabed.
To cut a section of 25 meters wide and 25 meters high takes around 30
hours. The sections were then lifted with large sheerlegs onto a barge and
taken to a recycling plant.
For
maintaining navigation hassle-free, the seabed had to be cleaned and grabs were
used to retrieve the smaller parts and
debris off the bottom. Divers cleared
the remaining waste. The salvaging of a sunken ship is certainly
challenging and in this case the salvors - Boskalis Westminster N.V ensured a
clean retrieval.
With
regards – S. Sampathkumar
4th
Apr 2019
PS
: news collated from various sources on the web – pics credit : Boskalis, the
salvor’s website.
