New Marine Overcoat Sea-Slide™ Increases Speed, Saves Fuel
—Literature Available Hydromer, Inc., has developed a water-based urethane drag-reducing overcoat called Sea- Slide™. Designed for the commercial market, it is an easy-to-apply finish that reduces friction between the boat's hull and the surrounding water and is based on the principle that a surface where water skins produces less drag than a surface that causes water to bead.
Sea-Slide actually absorbs some of the surrounding water in an ultra-thin coating that binds a layer of water around the hull. Because the contact angle between the hull and the surrounding water is close to 0 degrees, water turbulences and drag are greatly reduced. In-use tests report drag reductions from 11 percent to 17 percent at speeds above 7 knots.
Gerald H. Gumpert, director of sales and marketing, said: "In-use tests by commercial fishing vessels have reported impressive fuel savings with Sea-Slide overcoat. In one report from the Gulf of Mexico, the skipper stated that at a constant 1,350 rpm, his speed increased from 6!^ knots to 1% knots, an impressive 15 percent fuel savings." This confirms controlled experiments in which a weighted dinghy was towed around a quiet lake. A force gauge in the tow line indicated the force required to pull the boat before and after the coating was applied. Results indicated that at increasing speeds, a more substantial reduction in drag was attributed to the coating.
At 20 knots, the coating reduced the water drag by a substantial 17 percent, while at lesser speeds, where drag exists, the Sea-Slide coating provided an 11 percent benefit.
Because of the unique properties of Sea-Slide, it permits normal leaching of anitfouling toxins and does not inhibit antifouling bottom finishes.
According to the manufacturer, Sea-Slide rated excellent and superior over all kinds of antifoulant coatings in a comparison test with other bottom overcoat speed coatings.
The manufacturer also says that because Sea- Slide is a water-based urethane coating, it is easy to use and clean up after. There are no hazardous chemicals or complicated mixing required, and it may be used directly from can, applied by brush, roller or spray. It stays smooth and dries to the touch in 30 minutes, and cleaning is easily done with plain water. After curing (about three to four hours), the boat may be launched immediately or kept from the water indefinitely without losing its unique properties.
Sea-Slide may be applied over any bottom, with or without antifouling finish. It is economical to use, and one gallon covers approximately 750 square feet and is available in quarts or gallons.
A single quart can covers the average 25- foot boat hull.
For complete information and literature on Hydromer's new Sea-Slide marine overcoat, Circle 198 on Reader Service Card
Other stories from April 1985 issue
Content
- M A R I T I M E R E P O R T E R P u r c h a s es N e w a n d L a r g e r W o r ld H e a d q u a r t e r s O f f i c es page: 4
- Signet Awards Wartsila Design Contract For Two Cruise Vessels page: 5
- Propeller Polishing Guide Offered By Lips Propellers page: 6
- Kockums Delivers Big Vehicle Carrier To Wallenius Lines page: 7
- Red Fox Negotiating Licensing Agreement With John G. Kincaid page: 7
- Ocean Studies Conference Slated For June 16-19 At University Of Rhode Island page: 8
- Nor-Shipping '85 page: 10
- Pyramid Pump Division Offers N e w Catalog On Rotary Pump Lines page: 13
- Haggett Named Board Chairman For Shipbuilders Council Of America page: 13
- Valmet Specializing In Meeting Requirements Of The Offshore Industry page: 14
- New Diagnostic Kit From Aeroquip Corp. page: 14
- Marine Machinery Association Issues Invitation To Attend May 1, Meeting In D.C. page: 15
- Fincantieri To Build Huge Offshore Workship For Micoperi page: 18
- Stork-Powered Tug/Supply Vessel Launched By Quality Shipyards page: 20
- Robertson Introduces New Small Commercial Autopilot page: 20
- Halter Launches Rocket Booster Recovery Vessel 'Independence7 page: 22
- Radio Technical Commission For Maritime Services Annual Meeting page: 24
- Tug Fleet Owner And Operator Bart Turecamo Dies At Age Of 64 page: 25
- New Product Brochures Offered By Armco page: 25
- Fibergrate Introduces New Fibertred FRP Stair Tread Panels page: 26
- Promotions Announced By Woodward-Clyde page: 27
- Allied Introduces New Super-Strength Fiber page: 28
- ASNE DAY '85 page: 30
- Marinette Marine Offers Brochure On Shipbuilding Facilities And Capabilities page: 40
- MarAd Awards Contracts Totaling $2.7 Million For Repairs To RRF Ships page: 41
- Stanford Study Shows That Oceanrouting Reduces Casualties page: 42
- Marathon Introduces Semisubmersible For Gulf Of Mexico Environment page: 43
- T-AKX Prepositioning Ship Delivered By Bethlehem's Sparrows Point Yard page: 44
- "No-Leak" Seal From Falk Keeps Oil In And Dirt Out page: 45
- National Marine Study On PowerLube 750® Now Available page: 45
- Constant-Tension Winch Now Available From W.W. Patterson Company page: 46
- Capacity of Cockatoo Dockyard's Vickdock® Expanded To 1,000 Tons page: 46
- OTC-'85 SPECIAL PREVIEW page: 49
- Ship Financing Reforms Announced By Secretary Of Transportation Dole page: 76
- 'Silver Anniversary' For Atlas Freshwater Generator And Knutsen Vessel page: 76
- Gulf Coast Shipyards page: 78
- DAMPA Continuous Ceiling Approved By U.S. N a v y page: 97
- Norcontrol Revamps Its U.S. Operations — H o g a n Named President Of Authorized Agent page: 97
- Scanner Gives Peterson Builders Edge In Navy Shipbuilding Project page: 98
- Saab Introduces New Level-Gauging System page: 99
- Daewoo Names New Shipbuilding President page: 101
- Saab Purchases Salwico page: 101
- Perry Offshore Announces Expansion Through Tritech International Network page: 101
- Sonatech Announces New Expendable Doppler Soil Penetrometer page: 102
- TeleSystems Introduces Advanced Transportable Satellite Earth Station page: 102
- Membrane Air Separation System From Dow Produces Gaseous Nitrogen On-Site, Economically page: 103
- Work On Hopper Dredge 'Ouachita' For Gulf Coast Trailing Co. Is On Schedule At Twin City —Launching Set For End Of May page: 104
- New Worldwide Directory Available From Manville page: 104
- Larsson Appointed N e w Chief Executive of MacGregor-Navire page: 105
- BMV Maskin A.S. Introduces New Engine page: 106
- New Waterways Rope By Columbian Rope page: 109
- New Monitoring/Alarm System By Siemens AG page: 110
- Allison Gas Turbines Will Power World's Fastest Patrol Boat page: 111
- Contecco Appointed Exclusive Sales Agent For Swedish Firm page: 111
- Moss Point Marine Delivers Giant Freezer/Stern Trawler page: 112
- London Is Site For First International Cruise Shipping Conference June 19-20 page: 112
- McDermott Upgrades M / V Enterprise For Offshore Logistics page: 116
- New Marine Overcoat Sea-Slide™ Increases Speed, Saves Fuel page: 116
- Emulsion Fuels International Announces Supply Agreement With Exxon Chemical page: 118
- Cummins Announces New Increased Power Ratings For Their NT(A)855-M And KT(A)19-M Marine Engines page: 118
- Matson Will Convert Trailership To Combination Containership-RO/RO page: 119
- NcNab Now American Supplier Of Aquacatch® Speed Through Water Log page: 119
- ASCARGO Offers Free Brochure On Cargo Access Equipment page: 124
- Baldt 'Engineering Innovations Bulletin Highlights Moor-Free"" Rapid Release System page: 124
- Clemco Pipe Cleaning Tools Blast-Clean Pipe Interior Without Rotating The Pipe page: 125
- Shipboard Computer Distributed By Magnavox Displays Detailed Charts, Automates Navigation page: 125