Wronowski Fleet Adds First Boat With Cummins KTA-3067M Engines
The New London, Conn., fleet of John H. Wronowski gained a new member recently with the addition of the heavy-duty tugboat Paul A. Wronowski. The vessel was built by Wronowski-owned Thames Shipyard in New London, and joins a fleet of five towboats and 12 ferryboats operated by the Wronowski family.
The Paul A. Wronowski is the first boat in the U.S. powered by Cummins KTA-3067M marine diesel engines, supplied by Cummins Diesel Engines of Connecticut, Inc. of Hartford. The engines provide a combined 2,500 bhp for the 300-ton tug. A Niigata (Nico) reduction gear with 2.51:1 reduction transmits power through 5- inch shafts to the Niigata ZP-2 propulsion units, which provide an additional 2.12:1 reduction to the propellers. Kort nozzles house 72-inch propellers that can be set at a variable drive, a feature of the Niigata Z-drive system.
The Z-drive system permits the whole propeller assembly to rotate.
When more power is required, the p r o p e l l e r pitch is steepened, lifting the stern and c r e a t i n g more forward thrust power. Mr. Wronowski estimates the system effectively raises the propulsion drive power by 15 percent.
Mr. Wronowski plans to use the boat to service the U.S. Naval Submarine Base located in Groton, Conn. He designed the boat in conjunction with naval architects at John Gilbert & Associates of Boston, with the ex- pectation of handling Tridentclass nuclear submarines and long tows.
The tug has a beam of 30 feet and a draft of 10 feet 6 inches.
The half-inch plate hull is reinforced at c r i t i c a l p o i n t s with three-quarter-inch plate, enabling the tug to handle icebreaking chores in harbor areas. Cabin quarters can house eight crewmen, although the owner estimates that the boat will normally operate with three to six crew members.
Mr. Wronowski says he chose Cummins KTA-3067M engines for two reasons: his concern over the rising cost of fuel, and past experience with Cummins. He con- eluded the KTA-3067s could provide fuel savings of more than 20 percent. The engine is rated 1,250 horsepower at 1,800 rpm with continuous-duty fuel consumption of 63 gallons per hour.
The 16-cylinder engine weighs 10,700 pounds without gear, and stands 120 inches long, 53 inches wide and 76 inches high.
On-site service will be provided by Cummins Diesel of Connecticut, Hartford. Additionally, two of Mr. Wronowski's mechanics have been instructed in Cummins diesel maintenance to provide immediate response to any maintenance needs.
Other equipment onboard reflects the variety of oceangoing and harbor assignments the owner expects to handle. Hydraulically operated A l l e n - J o h n s on winches command a 50-ton maximum pull rating. Seven fuel tanks hold more than 70,000 gallons of fuel, while potable and ballast water tanks have storage capacity for more than 12,000 gallons of fresh water.
Electrical power is supplied by two 60-kw Detroit Diesel generators.
Two Quincy 725 air compressors and six Burke transfer pumps run off the generators.
Navigational needs are met by a North Star Loran C unit and Commar autopilot. A Kelvin & Hughes 1700 radar unit monitors short-range traffic while Furuno supplies long-range radar. The boat is also equipped with two Raytheon radios.
Other stories from May 15, 1981 issue
- Megasystems To Supply Monitoring Equipment For 8 Oceangoing Tugs page: 6
- MarAd Study Predicts Big Fuel Savings For Sail Assisted Ships page: 6
- Dr. P.W. Murrill Elected To Tidewater Board page: 7
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- Matson Orders Econics Fuel Optimizers—Reports 3.5% Savings In Fuel page: 8
- Sun Ship Jumboizing 'Lurline' Using Unique "Reverse Launch" page: 8
- Wronowski Fleet Adds First Boat With Cummins KTA-3067M Engines page: 10
- Promet Launches Offshore Supply Vessel For Jackson Marine page: 10
- Big IOT Petroleum Barge Launched At Galveston Shipbuilding page: 12
- SNAME Northern California Section Hears Paper On "Dejumboizing page: 12
- Mobil Orders Sperry Advanced Navigation System For The 'Mobile Search' page: 13
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- Promet W i l l Build The First Of Its Kind Of Rig For Elf page: 16
- G l o b a l M a r i n e Oil A n d Gas Unit Names Hatcher President page: 16
- First Saudi-Owned Shipping Company Gets First Vessel page: 18
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- C.T. Palo Appointed Marine Superintendent For McAllister-Philadelphia page: 18
- New Catalog Available From WABCO Describes Marine Control Valves page: 18
- McDermott Unit Renamed —Earles And Foster Appointed Senior VPs page: 19
- Electric Propulsion Systems Discussed At SNAME Chesapeake Section page: 20
- New Lifting Technique Lowers Costs In Construction Of Drilling Rigs page: 20
- Far East-Levingston To Build Drillship For Global Marine page: 21
- PROPELLERS '81 page: 22
- T A N O A w a r d e d $1.9-Million Contract By B I W Yard For A u t o m a t i o n Systems page: 24
- Texaco Names Dubuisson To N e w Offshore Post page: 24
- NICOR Expands Offshore Fleet With Acquisition Of Two Additional Companies page: 26
- Grant Hagen Joins Designers & Planners page: 26
- ASNE Delaware Valley Chapter Holds Meeting At Philadelphia Naval Base page: 28
- Admiral D.G. Iselin Joins Raymond Unit page: 28
- Hitachi Completes Combination Cargo Carrier For Galleon Shipping page: 30
- Penco To Market Showa's Fuel Mixing System page: 31
- Global And Japanese Firm Jointly Offer Offshore Production Systems page: 31
- IHI Delivers Japan's Biggest Helicopter Destroyer page: 33
- Sail Systems For Commercial Ships Could Cut Fuel Costs 30% —Literature Available page: 33
- New Brochure On Hoists, Winches And Mooring Systems Offered By Skagit page: 38
- Nuclear-Powered Sub 'Houston' Launched At Newport News Yard page: 39
- Main Iron Works Delivers Alco-Powered 'Karen Ann' To Corpus Christi Marine Services page: 39
- Designers & Planners Completes Replacement Study On Alaska Ferry page: 40
- Fireboat Design Contract To Nickum & Spaulding page: 42
- GM-Powered Towboat 'Jeanie-K' Delivered By Riverway Shipyard page: 42
- Penco Appointed U.S. Agent For Bremer Vulcan page: 42
- DeJong & Associates To Design New Tug Series For Corps Of Engineers page: 44
- Bailey Reorganizes Miami Operations—Paul Gausted Appointed Vice President page: 44
- New Worldwide Service Company Formed By Racal-Decca Group page: 45
- Van Dawark Appointed President Of Dillingham Maritime Division page: 45
- Avondale Gets $300-Million Contract From Exxon For Three Products Carriers page: 46
- Brochure And Technical Data Sheets Describe ZF Marine Gears page: 46
- Admiral Fugaro Named Senior Vice President Of Great Lakes Towing page: 46
- Two Power Plant Barges For The Philippines Completed By Hitachi page: 47
- Acadiana Shipbuilding Completes Yard Expansion page: 48
- MarAd Approves Title XI On Five Beker Vessels page: 48
- Racker And Vincent Named Assistant Vice Presidents At Lykes Bros. Steamship page: 48
- Levingston Lays Keel For First Jackup Rig For Noble Drilling page: 49
- W.R. Laws Elected To Executive VP At Geosource page: 49
- Sause Bros. Barge-Building Facility In Coos Bay Nearing Completion page: 50
- Biggest Stuelckenmast Floating Crane Delivered By Blohm + Voss page: 51
- Sixth Supply Boat Delivered To Marsea Marine By Halter page: 51
- Navy Awards Tracor $7.6-Million Contract page: 52
- N&SA Names Stumbo And Hagemann Vice Presidents page: 53
- Braden Offers New Series Of Improved Winches- Literature Available page: 53
- Two Double-Hull Bunkering Barges Delivered By Nashville Bridge page: 66
- Cummins-Powered 110-Foot 'Comet7 Delivered To Shippen Marine page: 66