The general cargo vessel is equipped with 4 deck crane make MacGregor - Hagglunds. Crane 1 & Crane 3 are single deck cranes, type GL 6027/MLC/4037-2 with a capacity of 60T @ 27M and 40T @ 37M radius. Crane 2A & 2B are Twin Cranes type TGL 4522/3728-2. Crane 2A is the Master Crane and 2B is the Slave Crane. Each crane can lift 45T in single crane mode and 90T in twin crane mode ( tandem crane mode ). Furthermore, twin cranes 2A & 2B can be combined with crane 1 or Crane 3 for a team lift (combined lift) of 120 Ton.
Alatas Singapore recently completed overload testing of 2x NMF cranes with SWL 400T and 1x NMF crane with 80T, as well as engine room crane and gangway load testing onboard one of the BBC heavy lift vessels. This particular vessel was equipped with 2x NMF cranes, type DK SL 400018-200030 with a SWL of 400t and 1x NMF Crane type DKV 80018/50028 with a capacity of 80T.
The vessel is equipped with four 60T heavy lift cranes, capable of operating in Team mode for a combined lift of 120T. Alatas Singapore’s Field Service team were mobilised for this quadrennial cargo gear survey and overload testing.
Alatas providing structural repairs to a Clark Chapman ship unloader, built in 1972. The ship unloader required structural work to the hanger stays, which provide support to the boom structure during the loading operation. The Alatas Crane Design Department carried out a analysis and came up with a design solution to save time and cost of replacing the hanger stays.
The vessel is equipped with a 250T AHC crane and has limited lifting height available for the load test. A convention rigging using a spreader bar and multiple smaller water bags is very time consuming and costly.
Alatas instead uses 3x 100T waterbag, rigged onto the Ramshorn hook via 2 master links, 300Ton loadcell and a single fall line to connect the water bags.
The vessel is a 6th generation ultra-deepwater drillship and was undergoing it's 5 yearly SPS on cranes and lifting equipment. Alatas was awarded the crane maintenance and load testing workscope on the following cranes & equipment
The crane in question is a old crawler crane, make Clark, built in the 1970's. Alatas had repaired a dented boom and replaced 4 lacings, utilizing Alatas' skilled welding and NDT team. Upon completion, the crane was load tested with a proof load of 172,000 lbs.
The vessel is a Cable & Pipe Layer, with a Huisman Main Crane, mounted on the ship's stern. The Crane is an Active Heave Compensated Offshore Crane, with a SWL of 400 ton, model Huisman PMOC 400T.
