Atlantic Towing and Canadian Superior Announce Contracting of Atlantic Hawk for Offshore Nova Scotia ``Mariner'' Natural Gas Project.

Energy Editors/Business Editors

SAINT JOHN, New Brunswick & HALIFAX, Nova Scotia--(BUSINESS WIRE)--Nov. 3, 2003--Atlantic Towing Limited ("Atlantic Towing," or "ATL") and Canadian Superior Energy Inc. ("Canadian Superior" - AMEX, TSX: SNG) announced today the contracting of the ATL vessel the Atlantic Hawk as the primary supply vessel supporting the initial drilling program of Canadian Superior's "Mariner" Natural Gas Project offshore Nova Scotia.

Graham Curren, Atlantic Towing's General Manager, commenting from ATL's Halifax offices, "We are very pleased to announce this new contract for the Atlantic Hawk. The vessel will be utilized as the primary supply vessel for the 'Mariner' shallow water exploration campaign, offshore Eastern Canada, beginning later in November. We look forward to continuing our activities with Canadian Superior and their industry partners."

In Calgary, when contacted at Canadian Superior's Head Office, Greg Noval, President of Canadian Superior, noted, "Atlantic Towing Limited performed well for us last year in support of drilling our first 'Marquis' exploration well, L-35/L-35A. This year, the Atlantic Hawk, is exactly what we want to support a late fall - winter drilling program. It is an outstanding local vessel with superior maneuverability and significant power."

The Atlantic Hawk, based from the port of Halifax Nova Scotia, is a world-class Anchor Handling Towing Supply Vessel (AHTSV), built at the Halifax Shipyard, and commissioned in 2000. The vessel has an overall length of 75 m (246 feet) and breadth of 18 m (59 feet); main engines providing 14,400 continuous horsepower, with 3 thrusters of 1,200 horsepower each and dynamic positioning capability.

Commenting on the awarding of the contract to Atlantic Towing, Mike Coolen, Canadian Superior's Director of East Coast Operations, said today, "Atlantic Towing's wealth of international and Eastern Canadian expertise and experience is a welcome addition to the 'Mariner' Project. We look forward to putting the Atlantic Hawk to work shortly when we tow the Rowan Gorilla V jack-up drilling rig out to the 'Mariner' well location. The Rowan Gorilla V is currently in the Port of Mulgrave in the Strait of Canso, Nova Scotia being mobilized for the upcoming 'Mariner' well."

Canadian Superior's "Mariner" Project is located north of the eastern tip of Sable Island on the Scotian Shelf. The first "Mariner" well, approximately 9 kilometers (5 1/2 miles) northwest of Sable Offshore Energy Project's Venture natural gas producing field, will be one of the deepest offshore wells drilled in Canada this year and will be located on Exploration License EL 2409 which was acquired by Canadian Superior in November 2001 for a work expenditure bid of Cdn. $15.5 million. The "Mariner" block (EL 2409), on which three large "world-class" prospects have been identified with current high-resolution seismic, encompasses a total area of 101,800 acres and directly offsets five significant discoveries near Sable Island including the 1.6 tcf Venture natural gas field located about 290 kilometers (180 miles) southeast of Halifax, Nova Scotia. The "Mariner" well will be drilled to a total depth of 18,370 feet (5,600 meters) and will evaluate one of three large structures that have been identified on the "Mariner" block, directly offsetting the 1.6 tcf Venture natural gas field.

Atlantic Towing Limited operates a large and diverse fleet of vessels that work regularly on the East Coast of North, Central and South America. ATL also specialize in heavy engineering projects and provided workboats, coastal tugs, AHT's, barges, and Z drive tugs during the Hibernia Platform construction as well as during the Confederation Bridge construction. With a reputation for quality service and cost effective performance, Atlantic Towing Limited has earned a place among the world's leaders in towing and supply service companies.

Canadian Superior is a Calgary, Alberta based oil and gas exploration and production company with operations in western Canada, offshore Nova Scotia and offshore Trinidad. The Company is one of the largest acreage holders offshore Nova Scotia, with interests in 934,065 acres offshore Nova Scotia (See: Canadian Superior's website at www.cansup.com to review Canadian Superior's "Marquis, Mariner and Mayflower Offshore Projects" and to view the "Table of Major Offshore Nova Scotia Acreage Holders" and "Offshore Nova Scotia Maps," to review information on the Company's Western Canadian operations and for information and detailed maps regarding Canadian Superior's new Trinidad "Tradewinds" Project).

This release includes forward-looking statements and projections, made in reliance on the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. The companies have made every reasonable effort to ensure that the information and assumptions on which these statements and projections are based are current, reasonable and complete. However, a variety of factors could cause actual results to differ materially from the projections, anticipated results or other expectations expressed in this release. While the companies make these statements and projections in good faith, neither the companies nor their managements can guarantee that the anticipated future results will be achieved. Reference should be made to the companies' (and their affiliates') Securities and Exchange Commission filings for additional important factors that may affect actual results.