Leslie J Clark

  • The 88th Annual Meeting of The Society of Naval Architects and Marine Engineers will convene at The New York Hilton Hotel on November 13-15, 1980 according to an announcement made by Lester Rosenblatt, president of the Society.

    "Again this year," Mr. Rosenblatt said, "we will have 14 excellent technical papers on Thursday and Friday . . . . I am looking forward to seeing everyone at the President's Luncheon on Thursday, the Banquet on Friday, and of course, the Saturday night Dinner-Dance." The papers have been especially selected by the Society's Papers Committee for the highest interest to the largest number of people attending, and the final printed papers, discussions and authors' closures will constitute most of the Society's Transactions, to be published in 1981.

    Mr. Rosenblatt will give his final message as president at the President's Luncheon in the West Ballroom. Several important awards will be made, among the Cochrane Award and the Joseph H. Linnard Prize, at the Luncheon.

    The Annual Business Session will be held at 4:00 p.m. in the Trianon Ballroom, where the members will elect a new president of the Society for a two-year term beginning January 1, 1981.

    On Friday at 7:30 p.m., the Annual Banquet will take place in the Grand Ballroom with Mr.

    Rosenblatt presiding. After the dinner, the David W. Taylor Medal will be awarded to Peter M.

    Palermo, director, Structural Integrity Division, Naval Sea Systems Command. The Vice Admiral "Jerry" Land Medal will be given to P. Takis Veliotis, executive vice president-marine, General Dynamics Corp. and general manager, Electric Boat Division. The biennially awarded Davidson Medal will be presented to Manley St.

    Denis, professor emeritus, University of Hawaii. The Elmer A.

    Sperry Award will be made to Leslie J. Clark for pioneering work in LNG transport.

    The Banquet speaker will be David S. Lewis, chairman and chief executive officer, General Dynamics Corporation.

    Many members will return to the Grand Ballroom on Saturday n i g h t to dine and dance the evening away to the strains of the Steven Scott Orchestra, at SNAME's Annual Dinner-Dance.

    Technical Sessions The technical papers will be presented at the time listed in the accompanying chart and in the rooms shown.

    The technical papers are: Paper No. 1—"Development of Protective Covering Systems for Steel and Bronze Ship Propellers" by Francis J. Dashnaw, Ambrose A. Hochrein Jr., Robert S. Weinreich.

    Paul K. Conn and Ivan C.

    Snell.

    SYNOPSIS — This paper reports on the development of elastomeric covering systems suitable for the protection of the surfaces of steel and bronze ship propellers. The development of covering systems f o r steel propellers will reduce the capital costs of propellers and the cost of cathodic protection by providing the necessary protection against cavitation erosion, erosion and galvanic corrosion while providing a smooth surface.

    For existing bronze propellers, the covering systems will reduce cavitation erosion damage and cathodic p r o t e c t i o n requirements, and improve propulsion efficiency.

    Paper No. 2 — " E f f e c t s of Hull F o u l a n t s and Cleaning/Coating Practices on Ship Performance and Economics" by John Austin Malone, David E. Little and Michael Allman.

    SYNOPSIS — Relationships between the parameters of ship design, operation and economics affected by hull surface condition are discussed and integrated in a Hull Performance A s s e s s m e nt Model. Exercises of this model demonstrate that significant benefits are attainable through the optimization of hull recoating and in-situ cleaning schedules. The model is shown to be a practical tool to assess alternative hull surface management practices for widely varying ship types, operating profiles and economic scenarios.

    Paper No. 3—"Liquid Dynamic Loads in LNG Cargo Tanks" by Robert L. Bass III, E.B. Bowles and P.A. Cox.

    SYNOPSIS — This paper evaluates dynamic sloshing loads in LNG cargo tanks, and reviews worldwide scale model sloshing data for the purposes of defining design load coefficients. Analytical methods are presented which provide techniques for determining wall structural response to dynamic slosh loads. A methodology is given for designing various tank structures affected by dynamic slosh loads.

    Paper No. 4—"Service Experience with 125,000-m3 LNG Vessels of Spherical Tank Design" by Joseph J. Cuneo, George A. Gilmore and Edmund G. Tornay.

    SYNOPSIS—This paper describes the development and start-up of the Indonesia-Japan LNG trade, and provides the characteristics of the eight U.S.-flag 125,000-m3 LNG vessels used in the trade.

    Also discussed are gas trials and voyage characteristics, improvements based on service experience, including modifications to cargo and ballast system components, the main reduction gear, and internal components of the boilers. Design of the cargo control system and reliability in electronic control systems are the most critical factors in determining the operation effectiveness of LNG vessels.

    Paper No. 5—"Technology Survey of Major U.S. Shipyards" by Robert Lowry, William L. Stevens and John D.F. Craggs.

    SYNOPSIS—This is a report on a technology survey of 13 major U.S. shipyards and 16 comparable foreign shipyards. Over 2,000 technology level determinations are placed in perspective with the results presented in terms of comparison among U.S. shipyards and between US. and foreign shipyards.

    The results identify areas where U.S. shipyards could improve their efficiency.

    Paper No. 6—" A Rational Methodology for the P r e d i c t i o n of Structural Response Due to Collisions of Ships" by Pin Yu Chang, Frederick Seibold and Chirasak Thasanatorn.

    SYNOPSIS — A rational methodology based on a synthesis of the modern finite element techniques, the collapse theorems, and the experimental data from collision tests is proposed for the prediction of the collision impact force and structural damages. The difficulties of the existing approaches also are discussed.

    Paper No. 7—"Practical Design Approaches for the Analysis of Barge Performance in Offshore Transportation and L a u n c h i ng Operations" by Rubin Szajnberg, William Greiner, Henry T. Chen and Philip Rawstron.

    SYNOPSIS — The problems and solution techniques encountered in quantifying the safety factors involved in the transportation of large offshore structures on deck cargo barges form the basis of this paper. The primary factors considered are e n v i r o n m e n t al force prediction, stability, motion and strength, and their interaction which forms criteria for selecting an acceptable barge/jacket c o n f i g u r a t i o n for towing and launching operations. The methodologies are presented and compared in light of the state-of-theart in naval a r c h i t e c t u r e and structural analysis.

    Paper No. 8—"Motions and Hydrodynamic Loads of a Ship Advancing in Oblique Waves" by C.H. Kim, Frank S. Chou and David Tien.

    SYNOPSIS — Application of a strip method are made evaluating the following: wave- and motioninduced forces and moments, response motions, wave loads on cross-section and relative motions of vessels of diverse configurations ; also ocean bottom effects on ship motions and speed effects on roll damping. Less favorable results are shown for shorter waves and higher ship speed.

    Paper No. 9—"Ship Maneuvering and Control in Wind" by Leonard L. Martin.

    SYNOPSIS—This paper examines the effects of wind on the control and turning of ships in general (rather than specific ships as in previous studies), identifies the major parameters d e t e r m i n i ng the several possible modes of behavior, describes possible ways of measuring course-keeping behavior by ship trials, and ends with some recommendations for design for satisfactory handling in wind.

    Paper No. 10 — "Measurement of Hydrodynamic Characteristics from Ship Maneuvering Trials by System Identification" by Martin A. Abkowitz.

    SYNOPSIS — System identification techniques were developed for the purpose of determining the hydrodynamic coefficients in maneuvering of the ship f r om the measurement of the motion responses resulting from rudder action during ship trials. These techniques were used to specify the trial maneuvers of the Esso Osaka (VLCC), and to "measure" the ship's hydrodynamic characteristics from the data obtained during these trials.

    Paper No. 11—"Guidelines for Prevention of Excessive Ship Vibration" by Helge Johannessen and Knut T. Skaar.

    SYNOPSIS—The authors describe when and how to do what by the use of simple formulas. They suggest the minimum number of investigations necessary for making the designer qualified to take the first decisions in the evaluation process without assistance from vibration experts. Costly and time-consuming calculations are recommended only when serious vibration problems may occur.

    Paper No. 12—"Hydroelasticity and Vibrations of Internal Steelwork of Tanks" by Guy C. Volcy, Michele M. Baudin, Michel D.

    Bereau and Francois G. Besnier.

    SYNOPSIS — Theoretical studies aimed at solving the problem of vibrations revealed the lack of a rational method for taking into account an important parameter, the apparent supplementary mass (called virtual added mass of fluid). It was necessary to estabblish a program including fluid finite elements and coupling ele- ments with solid elements used by F.E.M. calculations, enabling the designer to proceed with such calculations and correctly treat the concerned vibratory problems.

    The paper presents the results of these theoretical studies concerning F.E.M. modelization of the steelwork and calculations of free vibrations in air and in fluid of the assembly of a transverse ring of a tanker, calling for lumped masses and fluid finite-element methods. The correlation with measurements also is presented.

    Paper No. 13 — "Notes on Thrusters for Ship Maneuvering and Dynamic Positioning" by Ralph A. Norrby and Donald E.

    Ridley.

    SYNOPSIS—This paper presents the historical d e v e l o p m e n t of thrusters as maneuvering aids, as well as current thruster types and their applications. Various aspects of mechanical design are discussed including gears, bearings and seals. Hydrodynamic considerations based on model testing are explored, and a merit coefficient based on the work of Bendemann is proposed for use. In addition, thruster controls and sources of vibration and noise are addressed.

    Paper No. 14—"Early Design- Stage Approach to Reducing Hull Surface Forces Due to Propeller Cavitation" by Kjell Olav Holden, Odd Fagerjord and Ragnar Frostad.

    SYNOPSIS — The authors have based their paper on regression analysis of data from model wake field measurements and full-scale investigations. Recommendations on selection of afterbody lines to reduce the wake peak are given for both slender V-shaped and full-form ships. Presented are criteria for acceptable pressure fluctuations on the hull which should give satisfactory local vibration level in the afterbody structure as well as global vibration levels in the accommodation area. As a basis for further investigations, more specific guidelines are presented on selecting main propeller parameters and clearances, and a proposal on using the developed methods in a complete procedure is made.

    Discussions of the papers, both written and oral, will be given after each paper to the extent that time permits.

    Special Events Business Session—The Annual Business Session will immediately follow the presentation and discussion of Paper No. 5 in the Trianon Ballroom at 4:00 p.m.

    on Thursday, November 13. The agenda for this meeting will include the election of the president of the Society, consideration of proposed amendments to the Bylaws, a report of the elections which occurred at the Council Meeting on Wednesday, and such other business as may be introduced by the Chair.

    Ladies' Hospitality and Information —- A special area will be set aside in the East Promenade, third floor, from 9:00 a.m. to 4:00 p.m. Thursday and Friday for SNAME ladies and their guests to pick up information on places to visit and things to do and see in New York. Maps, brochures and other helpful suggestions will be available. Coffee will be served.

    Authors' Breakfast — Authors, presiding officers and assistant presiding officers will meet at breakfasts on the days of thensessions at 7:30 a.m. on Thursday in Suite 524, and on Friday in Suite 520.

    Sections Committee Breakfast —Breakfast will be served on Thursday in Suite 526 at 7:30 a.m.

    Membership Committee Breakfast— Yearly meeting will be held at breakfast on Friday in Suite 517 at 7:30 a.m.

    President's Luncheon — A general reception will be held in the West Ballroom Foyer at 12:00 noon on Thursday prior to the President's Luncheon. The President's Luncheon will begin at 12:30 p.m. in the West Ballroom on the third floor. Featured on the program will be the presentation of several important awards and an address by the president of the Society.

    Annual Banquet — The 88th Annual Banquet will take place on Friday evening, November 14, starting at 7:30 p.m.

    Dinner-Dance — The Dinner- Dance will be held in the Grand Ballroom on Saturday, November 15. A reception will be held in the Grand Ballroom Foyer starting at 7:00 p.m. The Dinner- Dance will start at 8:30 p.m.

  • MN Feb-24#48 ADVERTISER INDEX
Page Company    Website  Phone#
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39 Ahead)
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    ADVERTISER INDEX Page Company Website Phone# 39 Ahead Sanitation www.aheadsanitationsystems.com (337) 330-4407 29 All American Marine www.AllAmericanMarine.com (360) 647-7602 49 Arcosa Marine www.arcosamarine.com (615) 400-4373 3 C Job Naval Architects c-job.com/offshore Please visit our

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    November 2023 - Maritime Reporter and Engineering News page: 80

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Page Company    Website  Phone#
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    ADVERTISER INDEX Page Company Website Phone# 27 Ahead Sanitation www.aheadsanitationsystems.com (337) 330-4407 19 All American Marine www.AllAmericanMarine.com (360) 647-7602 35 Appleton Marine, Inc www.appletonmarine.com (920) 738-5432 7 Clean Gulf www.cleangulf.org Visit us online 41

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Alternative Fuels 
However, the AMR notes there)
    October 2023 - Marine News page: 24

    Feature Alternative Fuels However, the AMR notes there are no commitments now Fire Protection Association dealing with safeguards for the from any vessel owners or gas companies for H2 offtake. “generation, installation, storage, piping, use, and han- In summarizing work so far, the AMR states that

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Page  Company    Website  Phone#
35)
    June 2023 - Marine News page: 48

    ADVERTISER INDEX Page Company Website Phone# 35 Ahead Sanitation www.aheadsanitationsystems.com (337) 330-4407 23 All American Marine www.AllAmericanMarine.com (360) 647-7602 29 Appleton Marine, Inc www.appletonmarine.com (920) 738-5432 17 Conrad Industries www.conradindustries.

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Page Company    Website  Phone#
37 Ahead)
    August 2023 - Marine News page: 48

    ADVERTISER INDEX Page Company Website Phone# 37 Ahead Sanitation www.aheadsanitationsystems.com (337) 330-4407 21 All American Marine www.AllAmericanMarine.com (360) 647-7602 27 Arcosa Marine www.arcosamarine.com (615) 400-4373 25 Bristol Harbor Group, Inc. www.BristolHarborGroup.com (401)

  • MN Aug-23#27 systems have both been well received by workboat crews)
    August 2023 - Marine News page: 27

    systems have both been well received by workboat crews worldwide, featuring rugged reliability, excellent headset comfort, and are built with marine-grade components of- fering ingress protection, salt/fog corrosion resistance, wide ranging temperature tolerance and superior shock/vibra- tion absorption

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    August 2023 - Marine News page: 26

    Feature Comms the noise. He was later informed that some had been in- systems, featuring advanced Digital Enhanced Cordless jured and even killed by propellers and jet intakes. Telecommunications (DECT) technology, provide users Months later, while visiting the home of David Clark, with all the communicati

  • MN Aug-23#25 treme altitudes, the vacuum of space, or in the realms)
    August 2023 - Marine News page: 25

    treme altitudes, the vacuum of space, or in the realms asso- ciated with high-G ? ight,” said Dan Barry, Vice President/ Director of Research & Development at David Clark Com- pany. “Mr. Clark recognized that the unique capabilities and expertise developed by his company represented a true, National asset

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    August 2023 - Marine News page: 24

    Feature Comms • Apollo Communications Carrier worn by all Apollo of 2012, Baumgartner jumped from a capsule 128,000 feet astronauts on lunar missions, providing clear and reliable above earth (at that time a world record), suspended in space communications with mission control on Earth. by a balloon.

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called “The Straightaway” (essentially a)
    August 2023 - Marine News page: 23

    Feature Comms called “The Straightaway” (essentially a compression gar- ment for men) which sold in stores in New York and New England, and via direct mail. “G”-forces and the partial pressure suit With America’s involvement in World War II seeming inevitable, David Clark, working through business associ- a

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    August 2023 - Marine News page: 22

    Feature Comms DAVID CLARK COMPANY: A A S SN MERICAN UCCESS TORY avid Clark Company is best known within the and manufacturing boat crew communication solutions marine market for its wireless and digital head- for a variety of workboats, e.g., patrol boats, ? re/rescue set workboat crew communication

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    Marine News August 2023 • Volume 34 Number 8 Contents Features 22 An American Success Story 22 David Clark Company has grown from humble beginnings to become a leading designer and manufacturer of crew communication solutions. 28 Need A Lift? U.S. shipyards are adding serious lifting power

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    August 2023 - Marine News page: 2nd Cover

    Clark Headset David Marine Systems Series 9100 Digital offshore patrol fire/rescue Crews ?? board boats, craft, service vessels, Communication 5Y stem comp must tugs, other and workboats ? perform of l ex variety operations. • Versatility • Scalability Simplicity through and en noise

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    The Information Authority for the Workboat • Offshore • Inland • Coastal Marine Markets Volume 34 • Number 8 arine AUGUST 2023 www.marinelink.com News M Shipbuilding Answering the Call for US Offshore Wind Need a Lift? Shipyards Add Brawn with New Equipment Naval Architecture One-on-one with EBDG’s Mike

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    June 2023 - Maritime Reporter and Engineering News page: 3rd Cover

    ,QIDFWWKH\·UH High wind noise, roaring engines, pounding through rough water, salt and spray - it’s no wonder patrol boat crews often have to yell repeatedly to be heard. And the margin for miscommunication runs high. David Clark Marine Headset Systems offer clear communication and rugged

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    June 2023 - Maritime Reporter and Engineering News page: 48

    Index page MRJune23:MN INDEX PAGE 6/6/2023 3:24 PM Page 1 ANCHORS & CHAINS Silicon Sensing Systems Ltd, Clittaford Road Southway, JMS Naval Architects, 70 Essex Street, Mystic, CT , Plymouth, Devon PL6 6DE United Kingdom , UK , tel:+44 USA , tel:(860) 536-0009 EXT 2, fax:(860) 536-9117, Anchor

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Page Company    Website  Phone#
29  Ahead)
    April 2023 - Marine News page: 48

    ADVERTISER INDEX Page Company Website Phone# 29 Ahead Sanitation www.aheadsanitationsystems.com (337) 330-4407 23 All American Marine www.AllAmericanMarine.com (360) 647-7602 27 Arcosa Marine www.arcosamarine.com (615) 400-4373 19 Conrad Industries www.conradindustries.com (985) 384-3060 4

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    DISCOVERY F F F F F F F F For For more h photos of of f f f f f of t this historic ? nd, s scan the QR code Image Credit: Ocean Exploration Trust/NOAA Thunder Bay National Marine Sanctuary workhorses of the region’s wheat, coal, corn, lumber, and iron Finding Ohio ore trades. The Niagara River Transporta

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    February 2023 - Maritime Reporter and Engineering News page: 48

    Index page MRFeb23:MN INDEX PAGE 2/3/2023 10:57 AM Page 1 ANCHORS & CHAINS INERTIAL SENSING SYSTEMS Prime Mover Controls, 3600 Gilmore Way Burnaby B.C. V5G 4R8 Canada , tel:604 433-4644, fax:604 433-5570, Anchor Marine & Supply, INC., 6545 Lindbergh Houston, Silicon Sensing Systems Ltd, Clittaford

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Page Company    Website  Phone#
27 Ahead)
    February 2023 - Marine News page: 48

    ADVERTISER INDEX Page Company Website Phone# 27 Ahead Sanitation www.aheadsanitationsystems.com (337) 330-4407 23 All American Marine www.AllAmericanMarine.com (360) 647-7602 29 Bristol Harbor Group, Inc. www.BristolHarborGroup.com (401) 253-4318 41 Creative Systems www.ghsport.com

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    January 2023 - Marine Technology Reporter page: 37

    improves adhesion of the Scotch? l to the cable jacket. COMMERCIAL SOURCES OF POTTING 14. Cut a 6” length of Scotch? l putty. Remove back- COMPOUNDS AND SPLICE KITS ing tape, and stretch putty to ½ its original thickness. Wrap the Scotch? l tape around joint, pulling to create an elastic AeroMarine

  • MT Jan-23#35 Figure 1
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    January 2023 - Marine Technology Reporter page: 35

    Figure 1 A potted Y-splice cable from MacArtney Underwater Technology. The polyurethane casting (bottom right), is wide on the left side to allow for two cables and a cathode, and stepped down on the right side for a strain relief. Each cable has a locking sleeve installed before assembly. The cable on