HATLAPA serves the needs of the growing LNG market with high-performance winch modifications



Shipname: METHANE ARCTIC
Operator: BG LNG Services, Houston/USA
Manager: Ceres Hellenic Shipping, Piraeus/Greece
LNG-tanker, built in 1969 (!) at Kockums, Sweden
with 49.000 dwt and a length of 243m
In May 2004 the "Methane Arctic" underwent dry-docking at Blohm+Voss Repair yard in Hamburg Germany in order to bring the 35 years old ship into line with latest rules and recommendations.
One of the modifications required was to update the deck machinery (originally supplied by Brattvaag, Norway) to meet OCIMF requirements.
The mooring equipment was designed for a nominal pull of 150 kN and a static brake holding load of 600 kN.
Due to their significant experience in OCIMF-modifications, the customer contracted HATLAPA to redesign and modify the existing mooring winches, all within the dry-docking period of 30 days.
The task was to increase the rope capacity which by adding another 6 winch drums to the existing 10 winch drums. HATLAPA connected the additional (declutchable) drums to the single-drum mooring winches, thereby allowing the existing winch drives to be retained.
In addition, all 16 spindle brakes of the winch drums had to be renewed according to OCIMF-recommendation to a spring-loaded brake design which allows adjustment the brake force to between 60 and 80 percent of the rope breaking load.
The completion of this significant modification on time allowed the ship to leave the yard successfully and in proper condition for new challenges.
HATLAPA wishes the Methane Arctic "BON VOYAGE" !!!
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