Spain: Ibercisa Towing Winch for Newbuild ‘Bylgia’

Ibercisa delivers the first of two towing winches AHT type model MR-E/930/2/2500-89 which will be installed on the Anchor Boat (AHT) “Bylgia” which Hereema Marine Contractors from Holland have signed with the Armon shipyard in Vigo.

The electrically driven winch is the first of its kind in the world to be given this drive which has meant quite a challenging technological feat for the Vigo based Company given the dimensions and characteristics of the machine. The “Bylgia” was designed around the dimensions of the winch, developed by Ibercisa to reach a final weight of 280 tons.

Given its size, the drums (90t each) have had to be installed on the boat whilst afloat in the repair docks at Bouzas which necessitated that the boat be taken to the docks whilst still under construction. The winches will remain on board at the Armón shipyard but trials will take place at a later date in Gijón.

The winch has two waterfall drums each with a capacity of 2,500m of 86,9mm wire. The electronic engines are of permanent magnet type with elevated par at low revolutions. Giving 350 tons per 10 metres/minute on the first layer with the same pull, speed increases to 50 metres/minute when offload is against the dynamic brake. The static brake capacity is 600 tons on each drum, divided between two differential band brakes. Each engine works with a gearbox joined together by a declutching transmission allowing drums to work simultaneously, reducing pull by half and giving greater versatility.

Wire stowage is carried out by 4 rollers working independently and therefore permitting their movement to be in time with the cable guide, or moving in opposite directions to allow shackles and joints to pass freely. Each roller is driven by chains geared on wildcats by two electric motors with epicicloidal gears.

The “Bylgia” is the first of two anchor vessels for HMC under construction at the Armón Shipyard. Ibercisa envisages delivery of the second winch within a month and it will be installed on board the vessel “Kolga”.

[mappress]
Press Release, March 11, 2013