Markey Engineers New A&R Winches for Offshore

Friday, April 15, 2011
(Photo: Markey Machinery)

Markey Machinery recently introduced its new line of Abandonment and Recovery (A&R) winches.  Development of Markey’s A&R winches was facilitated through partnership with a world-wide service provider operating a fleet of marine vessels. The manufacturer says that the A&R machines are more cost effective in operation and maintenance requirements, thus making them ideal for oil field services such as maintenance, repair, and decommissioning. 

Markey’s type DEPS-76AR (see illustration) is a single drum, direct-pull type winch with level wind designed to work 3,300m of 4.75-in. (120mm) diameter wire rope. Redundant vector-motors developing 1,750 hp (1,310 kW) turn the drum through an induction hardened helical transmission. AC-variable frequency drives produce retrieval speeds of 32 m/min. and enabling torque control down to zero speed.  Markey’s automatic Render/Recover controls is designed to tame peak loads while pulling in 450Tm- over cable weight. 

The logistical demands of offshore oil and gas service-provider’s operations produced distinctive features - beginning with this machine’s mechanical arrangement.  The form of the DEPS is single drum- direct pull style of winch. Traction heads, alternatively, require multiple sheaves to produce the same pulling force. Bending wire ropes produces uneven strand loading and internal friction leading to accelerated wear of expensive cables. The DEPS-76 is designed to maximize the working life of ropes. Service providers that couple properly engineered machinery with sound maintenance practices enhance on-site productivity realizing greater margins on each project. 

Markey engineers design with a 34:1 D:d ratio - substantially larger and easier on the wire rope than the 20:1 D:d ratio of traction winch systems. The automatic fairleader withstands the breaking force of 4.75-in. (120mm) diameter wire. The drum-fairlead system carefully lays each adjacent wrap-protecting the exterior strands of the wire rope from abrasion. Sizing the drum to store the full scope of wire in eight layers benefits the performance of the winch and minimizing wire point loading.  To make the machine more versatile, Markey’s engineers designed a field bolt-on wire rope kit to adapt DEPS-76 grooved drum cores and sheaves to different wire diameters- if needed.  This advanced A&R machine is optimized and custom for a single customer’s application and specifications.

www.markeymachinery.com

 

Maritime Reporter September 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

New Products

New Functionality in WatchMate Vision

Vesper Marine has announced updates to its WatchMate Vision and XB-8000 product lines.   Now, in addition to transmitting and receiving position, course, speed

Fukushima Offshore Floating Wind Farm Update

A consortium has been participating in an experimental offshore floating wind farm project sponsored by the Ministry of Economy, Trade and Industry since March 2012.

Seaspan Receives 5th 10K TEU Boxship

Seaspan Corporation announced yesterday that it accepted delivery of a 10000 TEU containership, the MOL Brightness.   The new containership, which was constructed

Offshore

Arctic Oil: Bourbon to Enter Arctic Market in 2016

Bourbon plans to enter the growing Arctic Offshore market in 2016 with a new Anchor Handling Tug Supply (AHTS) vessel built by the Vard shipyard. This AHTS (Anchor

Total CEO: EU Must Fight US Crude Export Law

First major public appearance of new Total head; he challenges European politicians to fight US ban. The new head of French energy major Total challenged Europe to fight Washington over the U.

GAC Starts Hull Cleaning Op'ns in Oman

GAC EnvironHull hull cleaning operations using the brush-and-diver-free HullWiper system starting at the port of Sohar, just outside the Gulf of Hormuz. This

Deck Machinery

BigLift Shipping Christens New Flagship

BigLift Shipping today celebrated the naming of its new heavy lift vessel, Happy Star, at a ceremony held at Huisman China’s yard in Xiamenand. The christening was performed by Leanda Breakell,

Deck Crane with Synchronized Control Functions by MHI

Mitsubishi Heavy Industries, Ltd. (MHI) has completed delivery of the first three units of a 50-ton deck crane featuring a newly-developed synchronized control system,

MacGregor Reorganizes into 7 Operative Divisions

MacGregor, part of Cargotec, announces changes in its operative structure and starts a reorganization into seven operative divisions which will become effective on January 1, 2015.

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Maritime Standards Navigation Pipelines Pod Propulsion Salvage Ship Electronics Winch
rss | archive | history | articles | privacy | terms and conditions | 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: 0.2095 sec (5 req/sec)