Amoco's tug Michigan, operating through the winter in Lake Michigan last year, experienced damage to its stainless monobloc propellers necessitating unscheduled drydocking of the vessel twice and the installation of a spare propeller.
Lips Propellers was approached as to the feasibility of designing a detachable blade propeller with comparable strength and a hub geometry no larger than the original monobloc propellers. Lips responded with a four-blade design which combined the efficiencies of the original monobloc design with the advantages of a detachable blade propeller.
Spare blades can easily be stored aboard the vessel or easily shipped, even by air, allowing prompt replacement when damage is sustained.
The vessel does not need to be drydocked, and the removal and replacement of blades can be accomplished with lighter lifting equipment. Only damaged blades need to be removed and repair of damaged blades can be expedited due to the ease of shipment and handling.
For free literature containing full information on the entire line of Lips Propellers, Circle 17 on Reader Service Card
, Getty Fleet (Texaco) ordered a Lips speed-adapted propeller to meet the revised operational specifications of the M/T Getty Fleet. The new four-blade propeller has a maximum diameter of 7,400 millimeters (24.27 feet) and an expanded area ratio of .527. Cast from Lips "Cunial" alloy (ABS Grade
21 feet and a depth of 8 feet. She will be powered by a pair of GM 12V71 diesels with a combined horsepower of 800 driving 42-inch-diameter four-blade propellers. Interior arrangements will include a complete galley, dinette area, and accommodations for a crew of three. Marco plans to deliver the vessel on
an 8.5-meter depth. The vessel is powered by a slow-speed B&W 6L 45GFCA diesel engine, built in the USSR, with an output of 4,350 kw driving a fixed-blade propeller. A special feature of The Ventspils and sisterships is the capability to transfer oil without using normal quay facilities. The transfer
produced for vessels derated from 40,000 hp at 80 hp to 25,000 hp at 57 rpm with the speed reduced from 15 to 13 knots. The final weight of the 4-blade propeller shown was 69 tons, with a diameter of 11 meters. The fuel-saving on the first ship to complete the change has achieved the expected 10
private or semiprivate heads. The vessels will be powered by a General Motors EMD 20-cylinder main engine developing 4,000 bhp with a single fixed-blade propeller. The fishing machinery will be driven by a Caterpillar 3508 DITA engine rated at 1,000 bhp at 1,800 rpm. These vessels will feature
Grade E petroleum products. The welded steel vessel is powered by a Detroit Diesel model 6-71 engine that delivers 174 bhp to a 39-inch-diameter, four-blade propeller through a 3:1 reduction gear and 3-inch-diameter stainless- steel propeller shaft. The cargo pump is a 300-gpm Viking, hydraulically driven
flat afterdeck. The husky workboat is powered by a 270-bhp Cummins model NT- 855-M marine diesel, which drives a 42-inch-diameter, 28-inch-pitch three-blade propeller through a 3:1 reduction gear and 2%-inchdiameter stainless steel propeller shaft. Service speed is about 12 knots. The main cargo pump
will improve seakeeping characteristics and increase fuel capacity by 40,000 gallons (151,600 L), according to the company. In addition, a new five-blade propeller design with added pitch is expected to coax an extra 2,000 lbs. of bollard pull from the twin Z-drive propulsion system with highperformance n
power will be from two Cummins Model NT-1150M engines with Capitol reverse/reduction gears, all furnished by Cummins-Wisconsin, Inc. The four-blade propellers and Armco "Aquamet-18" propeller shafts are being furnished by Kahlenberg Brothers Inc. of Two Rivers, Wis. Electric power will be furnished
by 18-foot-wide Anne Marie, built by Louis G. Ortis Boat Co., is equipped with a Twin Disc MG515 marine gear, 4.5:1 ratio, 52-inch by 38-inch four-blade propellers, and Fernstrum keel coolers. The workboat is currently used in moving and positioning the barge carrying a dragline when performing dredge
wide and 7.5 feet in depth. Main propulsion is provided by two Cummins NT-855-M diesel engines to twin Michigan Nibrow 40- inch by 32-inch four-blade propellers through Twin Disc MG509 reduction gears with a 2.95:1 ratio. The NT-855-Ms are each rated at 300 hp at 1,800 rpm. Electrical power is provided
V VESSELS PATROL CRAFT Damen Patrol Vessels for Offshore Nigeria amen recently delivered a companies. Features of the 33m vessels four weeks and travel 1,200 nm in and ity and cost effectiveness to the bene? t pair of FCS 3307 high-spec include Damen’s trademark Axe Bow around Nigeria’s coastal and
V VESSELS 45m Cat for AZAM 18 Meter Fire-Floats for Bangladesh Robert Allan Ltd. has delivered a design of two unique ? re-? oats to Khulna Shipyard Ltd. in Bangladesh. The boats will measure 18.9 m x 5.3 m with a special hard chine semi-displacement hull designed for river service and ? tted with
E EMISSION REDUCTION TECH FILES Schottel Propulsion for Emission-Free Push Boat The agreement between Wärtsilä and Norsepower will pro- mote the use of Rotor Sails & support sustainable shipping. Wärtsilä, Norsepower Sign Agreement The technology group Wärtsilä and Norsepower, a provider of low maintenance
S SHIPMANAGEMENT FLAG “As a shipping company that is part of an oil company, our pri- mary role is managing marine risk, our secondary role is trans- porting oil.” Steve Herron, GM of Fleet Operations, Chevron Shipping Photo: Chevron and develop. A certain trust has devel- tal regulations adopted by the
.” This could be in policy, process, technology and then supply chain, he says. In terms of technology, there’s a move towards use of carbon ? ber in blades. “Historically, manufacturers have been reluctant make investment into sourc- ing carbon ? ber because it’s expensive and with very few supplying
when installing larger to retro? t a crane, and it really is a head- Some are investing. ? rm. “They can lift all the components turbines; longer blades and heavier na- ache for wind turbine installation vessels Just four years into entering the off- up to the actual max hub height of 120 celles
these large turbines You really need big machines, bigger in the timeframe of those projects. That whether there is capacity in the market. and blades,” says Barla. “We’re talking cranes to handle these.” could be cost effective and provide pow- “If companies are not making investment already
SHIPBUILDING USCG POLAR SECURITY CUTTER vessel to reach the North Pole unaccom- transits to get on station and conduct Mardiros. The number one mission for panied—but it is designed primarily for operations with limited or no logistics the new PSC will be to carry out the an- Meet The “Fleet” scienti?
WORKBOATS SOUTHERN TOWING COMPANY Are the Z-drives as robust as conven- off the exterior edges of the propeller. you have more of an effect on slowing awesome, it is just a phenomenal orga- tional? No. But life is a compromise and You can have a cort nozzle that solves down the vessel at 90 degrees than
WORKBOATS SOUTHERN TOWING COMPANY That’s signi? cant … were questions in the industry as to the solution. In my ? rst 12 months my con- gether.” And from that point on, we have It is signi? cant. There are still naysay- units robustness. versations with ZF were challenging to re? ned the Z-drive we
, Advanced Res- Maryland has a ready and able work- Center in New York with Suffolk Coun- 2030 and 43,000 by 2050. To support cue, Enhanced First Aid, Blade Repair, force capable of contributing to the con- ty Community College and leading labor this growth, U.S. Department of Energy and Slinger Signaller
VESSELS SAFE Boats Delivers 19th Boat to FDNY SAFE Boats International (SAFE) has delivered boats 17, 18 and 19 to the marine division of the New York Fire Department, all during the month of August. The three latest additions to the FDNY ? eet are 33’ full cabin boats, the most popular con? guration
CAD/CAM SOFTWARE TrueProp Software, they used man- ual methods to assess and repair their propellers. “We cleaned the prop a bit, assessed whether it was repairable with manual gauges, and beat the propeller with rawhide or brass hammers to get it to lay on a pitch block,” says Dorothy. “Then we beat
to identify damage, repair and tune propellers to improve performance and save fuel. By Adam Kaplan aving the right tools for the job makes all the blade designs. PropCad allows designers to quickly setup difference. Propeller professionals have looked the propeller geometry, prepare 2D drawings, inspection
Authors Contributors & MarineNews November 2019 Volume 30 Number 11 Huxley- Paine Custard Reynard Buddy Custard is the President and Michael Gerhardt is Vice President, Chief Executive Of? cer of the Alaska Mar- Dredging Contractors of America, and itime Prevention & Response Network. the CDMCS
as main pro- complete MAN propulsion package – including MAN 27/38 pulsion and the MAN 175D and D2862 engines as auxilliary and 175D engines, a ? ve-blade MAN Alpha propeller and gensets. The 175D and D2862 will receive double-resilient both remote-control and MAN HyProp systems – in connec- mounting
Tech Files Research Vessel Tech AAM Launches 77-f . RV for Duke University Images: All American Marine Inc. All American Marine, Inc. (AAM) completed construction modate up to 30 passengers, built and certi? ed under USCG and launched an aluminum research and survey vessel for Subchapter “T” regulations
HISTORY DESIGN EVOLUTION many requirements including reduced carries an intimidating set of new sys- navigation with an ever-changing and consideration for existing harbors and tug handling, dynamic positioning, com- tems and interconnections for controls, ever-moving coastline. In an age where high-conc
HISTORY DESIGN EVOLUTION second suggesting that sailing bulkers will go as fast as today’s fastest sailboats, For each column I write, Mari- it should never be forgotten that the fast- time Reporter & Engineering News has agreed to make a small est waterborne circumnavigations have donation to an
HISTORY DESIGN EVOLUTION The Future is ‘blowin’ in the wind: a number of new ‘old’ technologies such as wind power are making serious in- roads in maritime design as the industry plots a course toward decarbonization. Credit: Windship are simply the march of technology like ship autonomy. For my
of foul release coatings. For the last 15 supplier capable of testing innovative years he has been leading international coating solutions for wind blades to the teams engaged in the research and devel- latest and most challenging standards.” opment of powder coatings. Finally, for the global citizen
pumps, be instantly and precisely changed, time without being abrasive to speci? cally Vaughan Chopper enabling management of light, glare propeller blades. The second gen- Pumps with motors rated at 18.5kW and heat entering the interior. eration Non-Abrasive Diver Tool at 1470 rpm, 415V/3ph/50Hz
Engines: (2) MTU 12V4000M64, EPA T3 Vessel Name: Julia Leigh Beam: 32.4 feet Gears: (2) ZF 5055 Speed (loaded): 29 knots Draft: 6.0 feet Propellers: 5-bladed Ni/Br/Al Fuel: 2100 U.S. gallons Passengers: 290 Gensets: (2) 55kW RA Mitchell Aluma Marine Delivers to Big Apple porting the City’s Harbor Monitoring
PROPULSION However, the IMO’s decision last year to set ? rm GHG LNG suppliers are waiting for demand to mature before targets for 2030 (at least a 40% reduction per cargo tonne/ they build the required infrastructure to serve shipping. mile against 2008 levels) and 2050 (50% less GHG out- The industry