Monitoring System Takes Guesswork Out of Mooring Mega Vessels

MarineLink.com
Monday, July 01, 2013
Fenders are primarily designed to withstand the onshore motion of a ship against jetties, wharfs and quaysides by minimizing impact damage and withstanding parallel ship movements.

Mooring of large vessels in the LNG, petrochemical and container sectors is an intricate and critical procedure. The process entails bringing together a moving object with a static object, and with the imminent advent of even larger vessels (liquefied natural gas tankers with a capacity of 200,000 cubic meters and container ships with a capacity of 22,000 TEU*), the forces involved are enormous.

For tankers and bulk carriers, mooring frequently takes place alongside jetties at the end of finger piers, and even a gentle impact from a ship displacing more than 100,000 tons can have serious consequences. In the case of container ships docking at riverside wharves, excessive speed is likely to damage the ship more than the wharf. Even when safely berthed, fore and aft movement caused by incorrect tensioning of mooring lines can cause damage to fenders.

Fenders are primarily designed to withstand the onshore motion of a ship against jetties, wharfs and quaysides by minimizing impact damage and withstanding parallel ship movements. Any incident that causes unplanned downtime or safety issues has obvious economic implications, and it has become increasingly important to be able to determine liability for damage in the event of an incident – ship owners and leasers or port authorities and dock owners.

Trelleborg has developed a unique technological solution to the challenges of unscheduled downtime in port and data collection for insurance purposes. Called the Marine Fender Load Monitoring System (LMS), it’s designed to monitor and improve docking and berthing dynamics. The system draws on the unprecedented progress in recent decades in electronics, computers and software, and combines this technology with Trelleborg’s design and manufacture of advanced marine fender systems.

The purpose of the system is to reduce costs by increasing efficiency at ports, enhancing safety for crew and dockside personnel, optimizing mooring operations and protecting port owners’ assets. Two types of technology are used: load cell and laser based. Both systems measure impact against fenders as well as the continuing forces of a ship bearing against them.

Trelleborg’s Scott Smith, Regional Director Asia Pacific for marine systems, commented, “Load cell monitoring can be located within the fender as a stand-alone installation or integrated into a common platform that also incorporates load monitoring of Quick Release Hooks, the SmartDock Laser system and the SmartDock GPS system.” A second smaller and less costly system utilizes lasers. These measure the degree of fender deflection, and the readings can be used to trigger an alarm in the event of over-compression of a fender. The third aspect of the system makes use of lasers as a docking aid system, measuring actual velocities of a vessel approaching a berth. This system can be configured as a fixed or portable installation. “The data collected via the LMS are invaluable in helping port operators plan how far they can maximize facilities without undertaking major infrastructure developments and provide them with categorical information about ships berthing outside specified parameters,” Smith said.

Advantages of the LMS system include the capability of highly accurate measurement of loads applied to wharf and docking structures and the logging of collected data over an extended period. The system can be retrofitted and engineered to suit most competitors’ fenders. As with all marine products, standards of manufacture are critical, particularly for products in use at petrochemical or LNG berths.

There is the obvious issue of electronics in the wharf “splash zone,” as well as the need to have explosion-proof enclosures. Available space for the installations can be very restricted and the loads being monitored can be in the hundreds of tons, so smart designs are essential. Crucially, the system also enables the customer to have additional insurance at the berth and a categorical evaluation as to whether a particular vessel is berthing outside specification, which can make damage and replacement a clear liability for the ship owners.

Lasers promote safe, efficient docking

The Marine Fender Load Monitoring System uses laser and load cell technology, can be fixed or portable and can be integrated with other Trelleborg products – Quick Release Hooks, the SmartDock Laser system and the SmartDock GPS system. It is designed specifically to reduce port downtime and promote safer, effective docking while providing port owners/operators with a real-time data monitoring and collection system that gives them clear indications of whether a vessel is berthing outside agreed parameters – essential in the case of damage and subsequent insurance claims.
 

  • The Marine Fender Load Monitoring System uses laser and load cell technology, can be fixed or portable and can be integrated with other Trelleborg products – Quick Release Hooks, the SmartDock Laser system and the SmartDock GPS system.

    The Marine Fender Load Monitoring System uses laser and load cell technology, can be fixed or portable and can be integrated with other Trelleborg products – Quick Release Hooks, the SmartDock Laser system and the SmartDock GPS system.

Maritime Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter February 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Electronics

DARPA All Set To Launch Submarine Hunting Drone

The Defense Advanced Research Projects Agency (DARPA) will launch in April a sleek, 132-foot warship from Portland, OR, testing its abilities over a succeeding period of 18 months.

Update on Seagull Mobile apps for Crew

The Seagull mobile app for crew training status is set to revolutionise the way seafarers track their training records and receive critical safety alerts, by making

Danelec Marine Making Free ECDIS Upgrades

Ships with older Danelec ECDIS models are being upgraded to new hardware and software   Danelec Marine has launched a program to provide free upgrades of shipboard

Ship Repair & Conversion

Video: Catapult Testing on Aircraft Carrier Abraham Lincoln

U.S. shipbuilder Huntington Ingalls Industries’ (HII) Newport News Shipbuilding division has begun testing the updated catapult systems aboard the U.S. Navy aircraft

USCG to Inspect Storm-damaged Anthem of the Seas

The storm-damaged Royal Caribbean cruise ship Anthem of the Seas is scheduled to return to New York Harbor Wednesday evening where it will be met by a team of inspectors from U.

Beacon Finland Appoints Rio Marine for US Support

Beacon Finland, a maritime-related firm engaged in naval architecture, marine engineering and equipment, has appointed Rio Marine to service its JAK-ATB coupling systems in the U.

Ports

Indiana Ports Sets Cargo Record in 2015

State's three ports handle 12 million tons for first time in 54-year history  INDIANAPOLIS (Feb. 11, 2016) - The Ports of Indiana handled over 12.2 million tons of cargo in 2015,

DP World Bolsters Investment in India

DP World Pvt. Ltd, the world’s fourth biggest container port operator majority owned by the Dubai government, has plans to invest over $1 billion in India for augmenting its port-related operations.

Owner Fined for 'Dangerously Unsafe' Vessel

The owner of a harbor tanker has been fined £3,000 with more than £7,000 costs after pleading guilty to a charge of operating a vessel for being dangerously unsafe.

Marine Equipment

Premier Oil and Rockhopper Abandon Ocean Rig Contract

Two of the major British players in Falkland Islands offshore oil development, Premier Oil and Rockhopper Exploration, cancelled a joint venture contract with Ocean Rig UDW.

Teknotherm Marine Moves HVAC Arm to Bergen

Maritime heating, ventilation and air conditioning (HVAC) firm Teknotherm Marine has established a new subsidiary is established with the name Teknotherm Marine HVAC AS.

Sentinel Launches New Rudder Feedback Unit

Sentinel, a Beier Radio company, has designed and manufactured a new Rudder Feedback Unit (RFU) with many new features, including watertight components and connections

 
 
Maritime Security Maritime Standards Navigation Pipelines Port Authority Ship Electronics Ship Repair Ship Simulators Shipbuilding / Vessel Construction Sonar
rss | archive | history | articles | privacy | 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: 0.0958 sec (10 req/sec)