An order received recently by Schottel of America, Inc. of Miami, Fla., for its new SPJ-32 Pump Jet thruster units to be installed in two 92-foot line-handling tugs, marks the introduction of the 360-degree steerable, centrifugal-pump water thruster to the American market, and represents the first application of this design concept in the U.S.
Under construction at Moss Point Marine in Escatawpa, Miss., the 2,350-bhp Heimo Tide and Ade Tide will be operated by Tidewater Marine Service in West Africa, and will utilize the Pump Jets as bow maneuvering aids.
The new water jet product line, originally developed by Schottel Werft of Spay, West Germany, in conjunction with NATO Army Engineers for their "Bridging Equipment of the 80s" program, was designed as either a main propulsion unit or maneuvering aid for extremely shallow-draft vessels.
Schottel, a world leader in the field of steerable propulsion equipment, is very experienced in the design of water jet thrusters. More than 250 Schottel cone and bow jet units are in service in vessels operating on Europe's inland waterways system, where draft restrictions make conventional tunnel thrusters impractical due to cavitation and low efficiency.
The Tidewater Pump Jet units will be powered by hydraulic motors developing 120 hp at 2,800 rpm, although electric or diesel prime movers can be utilized in other applications as required.
For additional information on the new SPJ-32 thruster units, Circle 16 on Reader Service Card
In the late 1950's a company, Buehler, used patent and manufacturing rights from New Zealander John Hamilton to produce a line of water jet propelled boats and larger jet units which gained limited acceptance in the commercial and military fields. Other firms soon entered the competition including
, pattern equipment and manufacturing rights. We feel a small, quick reacting company such as ours is more closely tailored to the needs of today's water jet market," says Mr. Hill. Jack Seastrom, formerly with Jacuzzi Marine Jet and Offshore Logistics, Inc., has been named director of marketing
, Idaho, Washington, Alaska and, on a non-exclusive basis, California. The Hamilton Jet is powered by a conventional inboard engine. The pump draws water through a screened duct in the bottom of the hull and discharges it, under pressure, through a nozzle mounted in the transom. A deflector directs
Waterjet systems manufacturer Jet Edge, Inc. recently released a new brochure highlighting its precision water jet cutting products. The brochure features Jet Edge’s precision waterjet cutting systems and waterjet pumps as well as waterjet parts and accessories. Jet Edge’s ability and willingness to manufactu
Because low water levels frequently cause major problems for vessels navigating on inland waterways, the West German firm of Schottel developed a new propulsion concept, the Schottel Pump- Jet, which provides propulsion power even in shallow waters. After extensive tests had been conducted on the
experts the advantages offered by the Schottel Pump-Jet under practical conditions. The outstanding maneuverability and excellent performance in shallow waters were displayed with an M-Boat 3 developed and built by Schottel. The company presently offers standard Pump-Jet units in the power range from
Founded over 30 years ago, C.W.F. Hamilton & Co. Ltd. of New Zealand has introduced a new water jet for use aboard a wide range of vessels in both the commercial and passenger boat markets. The Hamilton Model 211 has been developed through the technology of computer-aided design to provide a high
C.W.F. Hamilton & Co. Ltd. of New Zealand is offering free literature on the wide range of craft for which Hamilton water jets were chosen as the preferred propulsion system. Inboard mounted near the stern, Hamilton water jets draw water through an intake duct and debris screen, fitted flush to the
is replaced by a specially designed pump wheel with optimized efficiency; and Schottel Bow-Jets which work with a horizontal propeller sucking water from below. The Schottel Rudderpropeller is detailed in a free 20-page color brochure. The publication contains more than two dozen photographs of
tool. Handsomely wrapped in a panoramic view of the Grand Canyon with the caption "Nature took millions of years to cut and wash the earth with water," the cover serves as a picturesque premise on which the brochure draws a point: utilizing the performance characteristics of water at ultra-high
— Literature Available Schottel of America, Inc., of Miami, Fla., recently received an order from the Coast Guard for a remote controlled water-jet bow propulsion and maneuvering system for a shallow-draft barge that is believed to be the first such installation in the U.S. The unit will be installed
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SAFE Boats Credit: Jensen Maritime maneuverability and operability. Vessels capable of ? ghting Moose Boats M2-38 Fire Rescue Catamaran ? res from the water is not a new concept; over the years LOA: 38’-10” SAFE has helped agencies around the country – and the Propulsion: (2) Cummins QSB6.7-425 mhp
for a genera- response scenarios therefore becomes very long; includ- tor. In 2018 Moose Boats delivered still another M2 Fire ing but not limited to open water
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tionality due to mechanical complications. The propulsion for Harbor Harvest. The company is a pioneer in electric machinery drives Hamilton HT-810 waterjets through a propulsion with over 20 years of experience and is now cardan shafting system from Driveline Service of Portland. bringing that proven
off- offshore demonstration project in Lake Erie. Once approved, shore marine transportation service industry, responded to it will be the ? rst freshwater project in North America. Con- proposed CBP Modi? cations to Jones Act rulings. This 10- struction is slated for 2022. The promise of offshore wind
probably depends on where you sit. By Tom Ewing n September 6, the U.S. Environmental Protection EPA writes that inspected vessels “operate low in the water agency (EPA) proposed to delay implementation of and use very large propulsion engines that do not operate Tier 4 marine diesel engines “in certain
transports across to be loaded onto lifeboats on deck, with the boats then the Delaware Bay annually. CMLF has never had to evacu- lowered into the water. Some other systems require pas- ate a boat in a real emergency, but the ? nancial commitment sengers to jump from the deck into the water and swim
records were not eclipsed, it was because of improvements learned that the river system is chang- made to the system including the addition of backwater ing and that precipitation around the storage added by the Flood Control Act of 1928. Duffy world has been increasing for decades. The river stage
INSIGHTS the brown-water and blue-water sectors for vessel owners, world-wide. These members join local clubs. There are 41 shipyards, transportation intermediaries, ports, and virtu- in the United States and 30 around the globe. We are grow- ally all segments of the maritime community. ing each year and
more! It’s also true that there is virtually we last took a look at the U.S. mariner population, its nowhere for these new mariners to ship out (blue water make-up and tried to make some sense of it all. And, since style) as the U.S.
MarineNews MarineNews December 2019 Volume 30 Number 12 (ISSN#1087-3864) (USPS#013-952) Florida: 215 NW 3rd St., Boynton Beach, FL 33435 tel: (561) 732-4368; fax: (561) 732-6984 Departments Analysis New York: 118 E. 25th St., New York, NY 10010 & tel: (212) 477-6700; fax: (212) 254-6271 www.marinelink.
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T TECH FILES Autonomous Underwater Dredger Prototype for Hydroge s the maritime industry steams toward dras- tic emission reductions, with the holy grail of decarbonization looming far in the future, Ait is generally agreed that advances solutions will come through collaboration To that end, maritime