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FALL 2001 - SPRING 2002 SCHEDULE

Date Topic Host

Sept. 13, 2001 Oil Outflow Experiment on MV Shoshone ASNE

Oct. 18 Aspects of Marine Surveying Port Engineers

Nov. 8 Ballast Water Mgmt.--Regulations & Design SNAME

Dec. 13 Training Ship Golden Bear Conversion SNAME

Feb. 14, 2002 US Coast Guard Trawl Warp Cutter ASNE

Mar 21 Vortex-Induced Vibration (VIV) of Cylinders with Fins (Student Paper) SNAME

Apr. 18 WR-21 ICR Marine Gas Turbine Program ASNE

May 30-Jun. 2 Joint SNAME Sections Meeting SNAME

MEETINGS SYNOPSIS

September 13, 2001
Topic: Oil Outflow Experiment on MV Shoshone
Speaker: Bob Apple, MH Systems & Randy Sharpe, Sharpe Consulting
Abstract: The U.S. Congress Oil Pollution Act of 1990 mandated the exclusive use of double hull tanker construction after 2015. The Act also specified studies on spill prevention for existing tankers and specifically mentioned research and development on the use of vacuum in tanks. In 1989, MH Systems developed and patented the American Underpressure System (AUPS), which reduces or virtually eliminates oil outflow from a tanker damaged in grounding or collision by applying a partial vacuum to the empty space above the cargo, the ullage space.

In September 1998, in the Defense Appropriations Bill, Congress directed the Secretary of the Navy to provide funding to the Maritime Administration, and a contract was initiated July 11, 2000, involving four elements of investigative effort: (1) Full scale tests on a tanker; (2) Supporting analyses; (3) Laboratory tests; and (4) Generic design development. The authors will provide an introduction to the AUPS, discuss the full scale tanker test and briefly discuss the laboratory tests.

* * * * * * October 18, 2001
Topic: Aspects of Marine Surveying
Speaker: Arthur Waddington and Andy Lott
Abstract: The speakers described how and what various surveyors look at on different types of vessels. They covered hull and equipment surveys, cargo surveys and damage to these items, and explored why we still have problems despite these surveys.

* * * * * * November 8, 2001
Topic: Ballast Water Management--Regulations & Design
Speaker: Spencer Schilling, Herbert Engineering
Abstract: Ballast water management through treatment is a rapidly developing regulatory arena involving local, national and international concerns. A brief overview of recent developments was presented. Then the discussion turned to the detailed design of two currently available treatment technologies for recent US new buildings: the POLAR ENDEAVOUR and R. J. PFEIFFER. Comparative life cycle costs for system retrofits was presented.

* * * * * * December 13, 2001
Topic: Changing Regulations and the effect on Training Ship Golden Bear
Speaker: Paul Jackson, Prof of Engineering Tech., California Maritime Academy
Abstract: IMO, Federal and State regulations change often. These changes effect the operations and design of ship requiring modification to existing ships and offering new problems for ship design. This presentation looks at the changes to Subchapter W, Title 46 of the CFR and the impact of those changes on the CMA Training Ship Golden Bear. The discussion will also include ideas for ship designers to deal with changing regulations.

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February 14, 2002
Topic: US Coast Guard Development of a Prototype Warp Cutter
Speaker: Ryan R Young, Supr, Tech Srvs Sec, USCG MLCPAC Naval Engr Div
Abstract: On an extremely tight schedule and budget, the United States Coast Guard developed a prototype non-lethal deterrent to counter foreign flag fishing vessels poaching in US territorial waters. Starting from sketchy details from Iceland, Norway and Canada, a system for cutting the trawl warps of floating catcher-processors was designed, built, installed, tested and deployed in Alaskan waters in a matter of a few months.

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March 21, 2002
Topic: Vortex-Induced Vibration (VIV) of Cylinders with Fins
Speaker: Yiannis Constantinides, Design Engr, Atlantia Offshore Ltd, Houston
Abstract: With offshore platforms being installed in deeper waters, the problem of Vortex Induced-Vibration (VIV) is becoming one of great significance. High velocity surface and deep sea currents cause undersea submersibles, such as risers and cables, to oscillate as a result of vortex shedding. These oscillations can severely reduce the fatigue life of the structure and cause unwanted vibrations. This paper studies the behavior of VIV, for both fixed and free oscillating cylinders, and to evaluate the effectiveness of VIV attenuation by introducing fins on the cylinder. University of California, Berkeley, Masters Program Student Paper and 2001-2002 SNAME Graduate Honor Prize.

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April 18, 2002
Topic:        The Northrup Grumman WR-21 ICR Gas Turbine Program
Speaker:   John Chiprich, WR-21 Program Manager, Northrup Grumman
Abstract:   Unlike conventional marine gas turbine engines, the intercooled and recuperated WR-21's advanced cycle recovers energy from the engine's exhaust gas to increase fuel efficiency across the operating range in both cruise and boost engine roles. The increased fuel efficiency of the WR-21, already demonstrated at more than 25 percent annual fuel savings in mechanical drive configurations compared with existing simple cycle, delivers a number of benefits for ship operators such as extended ship range for given fuel capacity. The WR-21 team, led by Northrop Grumman Corporation and Rolls-Royce, supported by French marine engineering company DCN, has been selected as the preferred supplier for marine gas turbines for the U.K. Type 45 D class destroyer, the new air defense destroyer for the Royal Navy which are replacing the long-serving Type 42 destroyers starting in 2007. The ICR design is also being considered by the U.S. Navy for its DD-21 platform.

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