Transas St. Lawrence Seaway Draft System Approved

press release
Monday, July 23, 2012
The TRANSAS Draft Information System (screen shot).

Transas Marine receives approval for Saint Lawrence Seaway Draft Information System.

 

The St. Lawrence Seaway is one of the most important transportation links in North America. To maximize the efficient use of the seaway, in 2001, the Seaway authorities started to a study which would determine the maximum load ships can carry while maintaining a safe Under-Keel Clearance (UKC).

 

Over the years the maximum draft of vessels transiting the Seaway in the MLO Montreal to Lake Ontario and the Welland Canal has been gradually increased. At the opening of the Seaway in 1959, the maximum draft for ships was set at 6.85 meters (22 feet 6 inches ).  This maximum draft is now set at (26 feet 6 inches). However, changes in water levels and a phenomenon called ship sinkage or "squat" made adjusting the maximum draft again more complicated.

 

Draft is measured prior to departure but a moving ship actually sits much lower in the water, particularly in shallow or constrained channels. How much a ship "squats" depends on factors such as the size and speed of the ship, shape of the channel, depth of the water, currents, wind, and even the presence of other ships.

 

Undertaken at the request of the St. Lawrence Seaway Management Corporation and industry partners that included the Canadian Ship owners Association and the Shipping Federation of Canada, the mentioned study resulted in standard squat models for the various types of vessels transiting the Seaway.

 

Over the past year and a half, the St. Lawrence Seaway authorities have developed a functionality description of a Draft Information System that incorporates the Seaway squat models, which was finally approved by all stake holders in March of this year and was then issued to the public.

 

In accordance with this specification, TRANSAS has developed a Draft Information System ( DIS ) based on the NS4000 ECDIS which allows the accurate display of the vessel’s position, real time water levels and data from highly detailed bathymetric charts.

 

An independent functionality verification and assessment was performed by Lloyds Register in June of this year after which the system was installed on board the M/V ALGOMA SPIRIT for final approval by the St. Lawrence Seaway authorities.

 
The TRANSAS Draft Information System successfully passed the performance tests without comments or open items. The DIS can run as a stand-alone system or in a network with the Transas NS4000 ECDIS providing a unique combination of precise navigation instruments, high definition chart data and real-time navigation information in both the DIS and the ECDIS. The Transas DIS is built on the same hardware platform as the Transas NS4000 ECDIS MFD providing for better redundancy and lower cost of maintenance.
 

The Draught Information System (DIS) is a program designed to calculate and display the under-keel clearance (UKC) on the basis of the following data:
 

• High Resolution Bathymetry data provided by the Canadian Hydrographic Service (CHS);
• Water levels; received automatically via Seaway AIS stations of a network of water level gauge stations or set manually by the user;
• Ship forward and after draft set manually by the user;
• Ship Squat based on Seaway Squat Models for the vessel and channel type. 
 

In dangerous navigational situations or under system fault conditions, relevant notifications will be provided for the operator. When the DIS is connected to the Transas NS4000 ECDIS network, any ECDIS can be set up as the DIS for back-up purposes in the same way as the DIS can be used as the ECDIS back-up. The Draught Information System button in the “UKC Data” display is intended for switching between the DIS mode and standard ECDIS mode. When the DIS mode is turned off, the MFD can operate as an additional work station.
 

The DIS will indicate whether certain areas are safe to pass or require speed adjustments to decrease the squat of the vessel. A required safety margin of 30 cm of UKC has to be maintained. The HD chart contours are then filled in with colors indicating safe passage areas.
 

The availability of this data on the bridge of the vessel will enable most vessels to maximize their draft up to 26 feet 9 inches from  the current Seaway permissible draft of 26 feet 06 inches.  This increase of 3 inches would mean that the average Great Lakes vessel can carry an additional 250 to 400 tons of cargo. The investment in this equipment will result in greater operational and environmental efficiencies based on a tonne / mile matrix.
Paul Welling,  Regional Sales Director, North America for Transas USA : “ The DIS development will not only benefit our customers but is also a huge benefit to safe navigation in the St. Lawrence Seaway. We are proving again that Transas Sets the Standard “.
 

 

Tom Anderson,  Director, Ports & Harbours, Navigation , Algoma Central Corporation : “The use of the Transas DIS will allow for the safe and effective deep loading of our vessels to optimize the full available water column in the Seaway.  The use by our vessel personnel of the Transas DIS integrated with shipboard ECDIS/ECS and the supporting Seaway AIS network is an example of an e-Navigation initiative that was developed for a specific area user that has further potential for use in other ports and their connecting waterways.”

 

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

Technology

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

Innovative Equipment Will Help Unload Listing Ship

Following Smit Salvage’s salvage of the stricken ship Modern Express in the Gulf of Biscay, another Rotterdam company has now become involved in the rescue operations.

Sea IT, Veritas Tankers Ink Long-term Software Deal

Sea IT has entered a long term ICT agreement with Veritas Tankers. The agreement comprises installation of BlueCORE Generation 4, an ICT platform specifically developed for the marine industry,

Navigation

N.E. Fishermen Warned of Extreme Cold, Wind Chills

The Coast Guard is urging the Massachusetts and Rhode Island fishing fleet to take caution heading into the weekend when life threatening temperatures and wind chills are forecasted.

Ice Condition 3 for Delaware Bay

The Captain of the Port (COTP), Delaware Bay is notifying mariners that Ice Condition 3 has been set for the Port which includes the Delaware Bay and River, the C&D Canal,

Volvo Penta Debuts Innovative Glass Cockpit

The new generation of Glass Cockpit expands Volvo Penta’s collaboration with Garmin for an advanced monitoring and control system that makes boating easier. And its clever application,

Maritime Safety

N.E. Fishermen Warned of Extreme Cold, Wind Chills

The Coast Guard is urging the Massachusetts and Rhode Island fishing fleet to take caution heading into the weekend when life threatening temperatures and wind chills are forecasted.

Maersk to Scrap Ships at India's Alang Beaches, NGO Dismayed

Maersk Line said on Friday it had chosen four shipbreaking yards along India's Alang beaches to handle an increase in vessels that need to be scrapped, to the dismay

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

Software Solutions

Sea IT, Veritas Tankers Ink Long-term Software Deal

Sea IT has entered a long term ICT agreement with Veritas Tankers. The agreement comprises installation of BlueCORE Generation 4, an ICT platform specifically developed for the marine industry,

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

Logistics

Hapag-Lloyd Enhances Conosur Service

Hapag-Lloyd has informed about its service enhancements on the Conosur Service (South America West Coast to South America East Coast). This is being upgraded by

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.

Great Lakes

WCI Reacts to President's Budget Request

Waterways Council, Inc. (WCI) reacted to the FY 2017 budget request made by President Obama earlier today, as detailed below.   The Budget   •  proposes $4.

All Ships’ Ballast Water Checked in Great Lakes Seaway

Great Lakes Seaway Ballast Water Working Group releases 2015 ballast water management report    The Great Lakes Ballast Water Working Group (BWWG) released its

Great Lakes Shippers Set Top Priorities

North America’s largest mining, manufacturing and agricultural companies have helped identify four top priorities to improve the competitiveness of Great Lakes shipping,

 
 
Maritime Contracts Maritime Security Maritime Standards Naval Architecture Navigation Offshore Oil Pod Propulsion Port Authority Ship Electronics Winch
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: 0.1128 sec (9 req/sec)