Marcon International Brokering Tarsiut Island Caissons in Arctic

press release
Monday, August 13, 2012

Marcon International, Inc. of Coupeville, Washington has been chosen to market four concrete caisson section constructed in 1981 to drill exploration wells in the shallow Beaufort Sea.

 

The hollow reinforced light-weight concrete caisson sections, each abt. 69m long x 15m wide x 11.5m high and weighing abt. 5,000 tonnes, were designed and constructed for the Tarsiut Island project, the first 100m diameter caisson-retained island built for drilling in the Arctic offshore. The caissons were arranged in a square, backfilled and standing on top of submerged sand berm.  Designed to be bottom founded, the caissons act as retention berms to contain and protect artificial island made of sand and can be repositioned for other purposes such as breakwater, dock, etc.

 

The Tarsiut caissons were the first caisson-type structure used in the Arctic. They were floated to a berm at the drilling site and after being ballasted down with sand the internal core was filled with dredged material.  The 7947m2 structure was used to drill one well in 1981/82 and left on site and during the winter of 1982/3 a dedicated research program carried on the platform.

 

The caissons have been stored, bottom founded near-shore in Thetis Bay, off the coast of Herschel Island in the Canadian Beaufort Sea since 1984. Caissons have been repositioned, most recently in 2001, and various inspections conducted, demonstrating continued general structural integrity (e.g., no leaching of materials). Annual inspections conducted to document damage or movement. 

 

Caissons can be shipped via submersible barge or independently towed short distances.

 

Further technical specifications, background information, small drawings and photos of the caissons can be found on Marcon’s website.

 

Over the years Marcon International Inc. has brokered a number of supply vessels, barges and tugs out of the Canadian Arctic.  To date this year Marcon has nineteen sales and charters worldwide. Several additional sales are pending and expected to close within the next couple of weeks. Looking back over the past 31 years, Marcon has averaged about 42 sales / charters per year.  Since our first sale, Marcon has brokered over 1,270 vessels and barges.

Maritime Reporter May 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Contracts

Mayor Garcetti on Ratification of Port Labor Contract

International Longshore and Warehouse Union members have ratified a five-year contract governing pay and work rules at 29 West Coast ports, including those of Los Angeles and Long Beach.

Fincantieri Invests In Camper & Nicholsons

Fincantieri has signed an agreement for the acquisition of a minority stake via capital injection in Camper & Nicholsons International (Camper & Nicholsons), the

Egypt's $3 Bln LNG tender in June

Egypt is reportedly to issue a tender in early June to buy up to $3 billion of liquefied natural gas over 2016 and 2017, Reuters reports.   The country recently

Finance

Fincantieri Invests In Camper & Nicholsons

Fincantieri has signed an agreement for the acquisition of a minority stake via capital injection in Camper & Nicholsons International (Camper & Nicholsons), the

Tsakos Energy Navigation Reports 156% Increase in Q1 Profits

Greece-based Tsakos Energy Navigation Ltd (TEN) has reported first-quarter profit of $37.3 million from $14.6 million in Q1 2014 - a 156% Increase. On a per-share basis it has profit of 42 cents.

Egypt's $3 Bln LNG tender in June

Egypt is reportedly to issue a tender in early June to buy up to $3 billion of liquefied natural gas over 2016 and 2017, Reuters reports.   The country recently

Arctic Operations

U.S. Senators Urge Obama to Block Arctic Oil Drilling

A group of 18 mostly Democratic U.S. senators on Friday urged the Obama administration to stop Royal Dutch Shell's preparations for oil exploration in the Arctic,

IMO Adopts Polar Code Environmental Provisions

United Nations' International Maritime Organization (IMO) has adopted the environmental part of the Polar Code. Hereby, internationally binding regulations on

Global Warming Slowdown Tracked to Indian Ocean

Global surface warming has slowed since the start of the twenty-first century, while Pacific heat uptake was enhanced. Analyses of ocean heat content suggest that

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Navigation Port Authority Ship Electronics Ship Repair Shipbuilding / Vessel Construction 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: 0.2753 sec (4 req/sec)