News | EQUIPMENT
Ancillary equipment
Schoenrock Hydraulik gets Type Approval
The shipbuilding industry supplier Schoenrock Hydraulik Marine Systems has just received type approval from the classification company Det Norske Veritas (DNV) for its latest hydraulically operated Shiptight sliding bulkhead door, as well as for the older variant of the same product. Tests were carried out on Schoenrock’s traditional
Hydraulic Watertight Sliding Door, a sliding bulkhead door which can withstand a water column pressure of 0 to 62m. At the same time the new Shiptight model was tested, with a water column pressure of 0 to 15m. Both models passed the tests, including the practical inspection approvals. Tey will be principally used for commercial ships and yachts. “Our tried and tested Hydraulic Watertight Sliding Door has been further optimised in various ways,” said Schoenrock managing director Dr Volker Behrens. Te use of a more rigid frame profile along with the
Y sealing ensures a significantly improved balance of the installation tolerances when welding, and means significantly lower commissioning costs. “Te guide rail and guide rollers are made of brass and stainless steel, and so are not subject to rust,” Dr Behrens added. Te sealing surface has also been treated to make it rustproof. Te power needed to close the door has been reduced through the optimisation of the door panel guide system.
Schoenrock latest hydraulic doors have received Type Approval from DNV.
Installation of the door has also been simplified, as it
proved possible to dispense with the fixed position of the cylinder and guide rail on the bulkhead. In the Shiptight variant, both components are connected to the door frame and so form a totality. “Another innovation is the external electrical motor for the oil pump, which now no longer runs into the oil bath,” the managing director explained. Tis means there is no difficulty about variable or even very short opening times, and the door can be activated at very frequent intervals without any problem.
Contact Schoenrock Hydraulik Marine Systems GmbH, Hasselbinnen 11, 22869 Schenefeld, Germany. Tel +49 40 866 438 0 Fax +49 40 866 438 10 E-Mail
info@schoenrock-hydraulik.com www.schoenrock-hydraulik.com
Ancillary equipment Palfinger delivers
for research ship Palfinger Marine has delivered its first Palfinger heavy duty foldable marine crane for one of Japan’s latest research ships. Palfinger Marine- und Beteiligungs-GmbH (PMB) is
tapping into the market segment of large marine cranes with its “PFM” range. Te cranes have a liſting moment of up to 350m tonnes. Te ability to combine different marine-specific winches makes this range unique and particularly attractive to users. Te option of certifica- tion by international companies completes the concept. Te owner of the vessel is the Japan Oil, Gas and
Metals National Corporation (JOGMEC) which together with Mitsubishi Heavy Industries Ltd. “For Palfinger, designing a crane of this size meant a totally new development. We were set this demanding task and we solved it successfully,” said Johnannes Linden- bauer, head of sales Palfinger Marine Cranes. “Develop- ing a special extension boom system which features a knuckle boom and a telescopic outreach of up to 21m was a particular challenge with this prototype. Te weight-optimised construction combined with the additional installation of two different marine winches turned out exceptionally well. Innovative winch control by means of a manual control system and radio remote control also guarantees that the crane is safe and easy to operate.”
Contact Palfinger Marine- und Beteiligungs-GmbH, Vogelweiderstraße 40a, 5020 Salzburg, Austria. Tel +43 662 88 00 33 Fax +43 662 88 00 33 -2770
www.palfingersystems.com
14 The Naval Architect April 2011
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