Search Results for: St. Louis

  • News

$4.85 million in grants for Marine Highway projects

“These grants will help us take advantage of the economic and environmental benefits of one of America’s most crucial transportation assets—our coastal and inland waterways,” says U.S. Transportation Secretary Anthony Foxx.The aim of the U.S. Maritime Administration’s Marine Highways Program is to expand use of U.S. navigable waterways to relieve highway, road and rail congestion, cut harmful air emissions, and increase the efficiency of the surface transportation system.

PROJECT FUNDING
Port of Baton Rouge and Port of New Orleans Container-on-Barge Service
A $1,758,595 grant for a new regularly scheduled container on barge service that supports exports moving from the Port of Baton Rouge to the Port of New Orleans, where the containers are loaded onto container vessels. The new service is designed to collect empty containers in Memphis, TN, and transport them to Baton Rouge to meet demand for chemical industry exports. The new operation would commence with five barges per week, which could potentially eliminate about 12,500 truck trips each year.

Illinois Container on Barge Shuttle Project
A $713,000 grant will help fund an 18-month demonstration project to provide shuttle service for agricultural customers moving containerized exports between southern and northern Illinois to access the Union Pacific and BNSF rail ramps. The shuttle service will operate on the Illinois and Mississippi Rivers between Channahon and Granite City, IL, with an option to extend the container-on-barge service to the Gulf of Mexico ports in concert with related Marine Highway Designation.

James River Container Expansion Project
The 64 Express is an existing container-on-barge service at the Port of Virginia that operates along the James River between Hampton Roads and Richmond. VA. The $476,748 will support development of new customers by expanding service to include moving refrigerated and frozen products on the barge. The 64 Express is already removing over 15,000 truck trips per year.

New York Harbor and Container and Trailer on Barge Service
A $1,632,296 grant will support the New York Harbor Container and Trailer on Barge, an existing service that operates in New York Harbor between Red Hook Container Terminal in Brooklyn, NY, to Red Hook Barge Terminal in Newark, NJ. The grant will be used to purchase infrastructure that will support improved barge operations and the creation of a crane operator training center that will improve both safety and container throughput.

M-55/M-35 Container-on-Barge Project
A $96,000 grant will support planning efforts by the City of St. Louis Port Authority, Inland Rivers Ports & Terminals, Mississippi River Cities & Towns Initiative, and Upper Mississippi River Basin Association on developing containerized shipping along the Mississippi River, between New Orleans, Minneapolis and Chicago.

M-495 Potomac River Commuter Ferry Project
A $173,361 grant will support the planning efforts to development a new commuter ferry service on the Potomac River. If fully developed, the M-495 Potomac River Commuter Ferry could reduce existing congestion on highways and interstates by providing commuters and shippers with more transportation choices between Northern Virginia and Washington, DC.

 

 

  • News

Great Lakes Regional Focus: Thriving business

Anyone needing reassurance that the shipbuilding sector in the United States is alive and well need look no further than the Great Lakes. While yards along the U.S. Gulf reshuffle business strategies to help during the down oil market, yards along the Great Lakes continue to work on a number of projects, investing in infrastructure and leveraging partnerships to diversify portfolio offerings.

Perhaps the busiest group of all is Fincantieri Marine Group (FMG)—the U.S. subsidiary of one of the world’s largest shipbuilders in the world, Fincantieri. The Fincantieri Marine Group is comprised of three Great Lakes shipyards—Fincantieri Bay Shipbuilding (FBS), Fincantieri Marinette Marine (FMM), and Fincantieri ACE Marine (FAM).

Since acquiring the Wisconsin yards in 2008, Fincantieri has invested well over $100 million to build a shipbuilding group that will provide flexibility for its customers, and provide construction and repair services to both the government and commercial sectors.

Sturgeon Bay, WI-based Fincantieri Bay Shipbuilding (FBS), which is one of the last boat builders remaining in the Bay, has been essentially non-stop the last couple of years. The yard currently has numerous projects under various stages of construction with a backlog that extends through 2018. Most notably, the projects include newbuilds for one of the most active sectors in the country, the ATB market.

This past May, the yard delivered the Articulated Tug Barge (ATB) unit Barbara Carol Ann Moran and the 110,000 barrel ocean tank barge Louisiana to Moran Towing Corporation, New Canaan, CT. The unit was the third delivery to Moran under a 2014 contract. 

The 5,300 HP, 121 ft ATB tug Barbara Carol Ann Moran is certified ABS Class +A-1 Towing Service, +AMS, and is equipped with state-of-the-art navigation and communications technology.

What made the delivery of the unit so impressive was that it was delivered on the exact day called for by the contract—emphasizing FBS’ high standards of meeting customer requirements, building a quality vessel and delivering on time.

Currently, FBS is under contract to construct two ATB tugs and two ocean going tank barges for Kirby Corporation; one ATB tug and one oceangoing tank barge for Plains All American Pipeline, LP; and one ATB tug and one oceangoing tank barge for AMA Capital Partners.

“We continue to be optimistic about the future of the industry we serve,” says, Todd Thayse, Fincantieri Bay Shipyard Vice President and General Manager.

To keep the momentum going, Fincantieri recently purchased the Palmer Johnson facility adjacent to the Bay Shipbuilding yard. Bay Shipbuilding has extensive expansion plans set for the 3-acre site, including the construction of new indoor Fabrication/Erection facilities, an indoor Blast and Coating building, outfitting shops and additional office facilities.

“This recent acquisition of the former Palmer Johnson facility has been well received by the industry and will allow us to pursue several new construction projects, which may include fishing vessels, ferries and landing crafts, while continuing to serve our core ATB market. These purpose-designed buildings will increase our overall output and capacity and improve our ability to meet critical schedules,” says Thayse. 

“We will also be able to move more construction indoors which will allow FBS to further provide cost-effective solutions for our customers,” he added.

Indoor facilities will enable work to be ongoing for both newbuilds and repair work—especially during the winter months when Great Lakes fleet repairs are vital and time sensitive.

Earlier this year, FBS had 17 vessels at the yard undergoing winter repairs well into April. The vessels ranged from thousand-foot long bulk tankers, to medium-sized ships, to tugs and barges. Work included large-scale scheduled maintenance repairs, scrubber installations, repowering and structural steel renewal, in addition to electrical automation enhancement and ABS and U.S. Coast Guard inspections.

Additionally, Keylakes Shipping’s 768 ft bulk carrier John G. Munson is currently undergoing conversion at Bay Shipbuilding. The vessel is the tenth steam-to-diesel, or diesel-to-diesel repowering project that FBS has been awarded since 2009. The freighter, built in 1952 will undergo a complete repower at FBS. It is expected to undergo sea trials in 2018.

Meanwhile, FMG’s two other Great Lakes shipyards are busy constructing the next generation of warships for the U.S. Navy.

Earlier this summer, a keel laying ceremony was held at Fincantieri Marinette Marine, Marinette, WI, for the U.S. Navy’s 17th Littoral Combat Ship (LCS), the USS Indianapolis. The ship is one of six in various stages of construction at FMM, with an additional three ships in long-lead procurement. The yard has already delivered four LCS ships to the Navy—the USS Freedom (the lead ship in the Freedom variant), the USS Fort Worth, the USS Milwaukee and the USS Detroit.

The Lockheed Martin-led team is made up of Fincantieri Marinette Marine, along with naval architectural firm Gibbs & Cox, and more than 500 suppliers across 37 states. The U.S. Navy’s LCS construction program is divided between two groups—the Lockheed Martin team, building the Freedom variant, and the General Dynamics-led team, with Alabama-based Austal USA building the Independence class LCS.

Fincantieri Ace Marine, Green Bay, WI, also has a hand in producing the Freedom variant of the LCS. The yard, which specializes in the design and construction of high-speed coastal intercept and patrol vessels, most notably the builder of the Response Boat-Medium (RB-M) for the U.S. Coast Guard, produces the aluminum superstructures and additional aluminum components for the class.

To top off FMG’s three shipyards success, all three received the annual “Excellence in Safety” award from the Shipbuilders Council of America earlier this year. The award recognizes a shipyard’s commitment to safety, and the hard work and dedication put forth from shipyard employees.

The Great Lakes Group Eyes Expansion, Partners with Damen
FMG isn’t the only regional player seeking to further develop. This past June, the City of Cleveland authorized the sale of property adjacent to the Great Lakes Towing company headquarters. The acquisition of the property will enable the Great Lakes Shipyard, part of The Great Lakes Group, to operate at full capacity, all year round.

The expansion will include a 68,000 square foot facility that will accommodate a state-of-the-art 770-ton mobile Marine Travelift crane—the largest on the Great Lakes, and third largest in the world.

Great Lakes Group says that with the new facility in place, the Great Lakes Shipyard will be able to continuously provide all services for new vessel construction, as well as custom fabrication, ship maintenance and repairs.

Part of the services Great Lakes Shipyard will offer are those required for Subchapter M. Under Subchapter M regulations, towing vessels greater than 26 ft, or any vessel type moving dangerous or hazardous materials, must obtain a Certificate of Inspection documenting: Drydock inspection; Internal Structure Exam; Annual Inspection and Surveys; and Machinery and Electrical.

Stan TugboatJust last month, the yard kicked off construction for the first Damen Stan Tug 1907 ICE. The tug is the first in a series of ten being built in compliance with the new Subchapter M regulations. The tugs are being built for The Great Lakes Towing Company (the Towing Company).

The tugs will measure 65 ft x 24 ft x 9 ft and will be powered by two MTU 8V4000 M54R engines generating 1,000 hp at 1,600 rev/min.

“This new construction program is further evidence of the innovative spirit the Towing Company has always embraced since its founding over 117 years ago, and reflects the commitment we have to our customers and the entire Great Lakes/St. Lawrence Seaway marine transportation industry,” says Joe Starck, President of the Towing Company.

Under the construction program two new harbor tugs will be introduced each year for the next five years—helping to stabilize operations and improve day-to-day business, assures Starck.

“The tugs,” he added, “will be ideal for the long-term sustainability of our harbor towing activities, and provide our customers with an even greater level of reliability, performance, and safety, across our entire Great Lakes service network.”

The Great Lakes Towing Company’s fleet provides ship assist, cargo transportation and logistics, ice breaking, and emergency assistance for every kind of vessel, barge and marine structure on the Great Lakes-St. Lawrence Seaway.

The Damen Stan Tug 1907 ICE are also the first tugs to be built in the U.S. under Damen’s Technical Cooperation program with Great Lakes Shipyard. The agreement, which was entered into at last year’s Workboat show, authorizes the Great Lakes Shipyard as an official builder of Damen designs for the next five years.

Burger Boat’s diverse portfolio
Since 1863 Burger Boat Company, Manitowoc, WI, has done everything in its power to meet the needs of its growing customer base. The boat builder, which has delivered countless vessel types in the range of 50 ft to 200 ft in length, implements what it calls a “lean” philosophy to its business practice, ensuring procedures are performed and completed on time, and vessels are delivered to customers on budget.

A builder of steel and aluminum vessels, Burger builds everything from yachts to passenger vessels, such as the 98 ft passenger vessel Chicago’s Classic Lady for Chicago’s First Lady Cruises—and patrol to research vessels, such as the 78 ft research vessel Arcticus which was delivered to the U.S. Geological Survey in 2014, just to name is a few.

Last year, Burger delivered a tour boat to Chicago-based Wendella Boats. The 340- passenger Lucia is an 89 ft steel vessel that was designed by Timothy Graul Marine Design, Sturgeon Bay, WI.   The steel boat is certified USCG Subchapter K, and is powered by two Caterpillar C12 main engines and features two Northern Lights generators. 

Most recently, Burger began construction on a custom 103 ft 6 in x 26 ft 5 in full displacement steel and aluminum Explorer Motor Yacht for an unnamed owner.

The expedition style motor yacht has a steel hull and aluminum superstructure. The vessel, designed by DeBasto Design, Miami, FL, will be launched Spring 2017. The ABS class yacht will be powered by two Cat C-18 ACERT main engines, and will be able to reach a cruising speed of 12 knots.

Fraser faces OSHA fine
Located in Superior Wisconsin, on the St. Louis Bay of Lake Superior, Fraser Shipyards, part of the Fraser Industries group which also includes boat builders Lake Assault Boats, provides full shipyard services from its sixty five acre site, featuring two dry docks and approximately 2,200 feet of berthing space. Since 1890, Fraser Shipyards has been a prominent fixture in the Twin Ports of Duluth and Superior, serving the Great Lakes shipping community. Most of its current 150 workers, 75 percent of which are structural welders, equipment operators, fitters and pipe fitters, are third generation employees for the company.

That kind of longevity and loyalty from workers can serve as a testament to Fraser’s commitment to the industry, the community and its employees, but recent findings have raised questions about the yard’s safety culture.

Last month, the U.S. Department of Labor’s Occupational Safety and Health Administration (OSHA) announced that sampling results taken during a recent retrofit determined that 14 of Fraser Shipyards workers were exposed to heavy metals and had lead levels 20 times higher than the exposure limit.

According to OSHA’s Assistant Secretary of Labor, Dr. David Michaels, “Fraser Shipyards accepted a contract with a very low profit margin and penalties for delayed completion, but could not meet the schedule without endangering its workers.”

That contract, from Interlake Steamship Company, Middleburg Heights, OH, was for the modernization of the Herbert C. Jackson. OSHA stated in its report that Fraser Shipyards’ management was aware of the presence of lead and asbestos throughout the 1959 built vessel. The ship arrived at Fraser December 2015 for a six-month retrofit project and was required back in operation for the summer iron ore shipping season.

In a statement, James Farkas, President and Chief Operating Officer of Fraser Industries, said “We are a family-owned company that has been in Superior for 126 years. We see all of our employees, laborers and contractors as part of the family.”

He added, “We take the health and safety of our people and our community seriously. We acted to protect our people as soon as we learned of the problem. We have worked with all of our employees, laborers and contractors to ensure their health by bringing in medical experts, as well as the highest levels of testing, protective equipment and safe operating procedures. We strongly disagree with OSHA’s statement that any of the issues were caused or worsened by business or profit motivations.”

The agency cited 14 willful egregious health violations for each instance of overexposing a worker to lead, and cited five additional willful violations for failing to conduct monitoring to assess lead exposure and failing to implement a lead compliance or respiratory program.

Additionally, OSHA issued 10 serious violations to the company, and placed Fraser Shipyards in its Severe Violator Enforcement Program (SVEP). For companies on the list, mandatory follow-up inspections become the norm.

Since the findings, Fraser has taken steps to help mediate the matter, and protect its employees. According to a statement, as soon as the management learned of the high lead levels it halted work on the Herbert C. Jackson. Fraser Shipyards also went on to engage medical experts from the region’s two leading hospitals, and industrial safety experts from the International Brotherhood of Boilermakers union to advise the company and oversee health testing. And it purchased state-of-the-art safety gear and equipment to protect workers.

Additionally, Fraser engaged medical professionals, OSHA and union officials to develop and implement new safety procedures.

“We appreciate their responsiveness to getting this issue fixed and taking care our members,” said Mark Garrett, Director of Health and Safety Services for the International Brotherhood of Boilermakers, the union that represents workers at the yard. “We don’t get many employers that step up like they did. They were straightforward, asked for our help and put in place our recommendations for safety.”

In total, Fraser could face close to $1.4m in OSHA penalties.

 

  • News

Propulsion: Powering up your choices

The International Workboat Show in New Orleans, LA, offers the marine industry an ideal time to not only assess the current state of the industry, but also an opportunity to view some of the newest technologies, products, and services. With stricter emissions regulations coming into play in 2016 and operators strongly focused on efficiency and the bottom line, this year’s show saw a number of new power and propulsion technologies unveiled. GE Marine, for example, extended its EPA Tier 4 engine series to include 16- and 12-cylinder V-models, an 8-cylinder inline model, and a 6-cylinder inline model that is currently planned for development.

GE says the engine series meets the Environmental Protection Agency’s (EPA) Tier 4 emission standards without the use of urea after-treatment, while maintaining fuel efficiency and service intervals. In addition, the engines have a faster response time to load steps, and a Maximum Continuous Rating (MCR) that is 12 percent higher than their Tier 3 compliant predecessors. 

Coastal tug and barge operator Reinauer Transportation purchased two 12V250MDC Tier 4 diesel engines for its new Articulated Tug Barge (ATB) unit under construction at Senesco Marine in Kingstown, RI. One of the engines was displayed at GE’s booth at the Workboat Show.

“We chose the new GE Marine engines because we like their robust design and component configuration,” says Christian Reinauer. “The engine closely matches the footprint of our current vessel design. This limits the amount of re-engineering while meeting Tier 4 emissions requirements without the complications of urea after-treatment.”

GE’s Marine Product Manager Rob Van Solingen says the engines offer several advantages as compared with engines that use an SCR-based emission control system.

He says that the GE Tier 4 engines are less complex, allowing ship designers to develop engine rooms that make the most efficient use of space. This reduction in complexity also translates into improved labor efficiency at shipyards.

The engines also offer space and weight savings, since there is no large SCR reactor system in the exhaust piping of each engine nor any urea tank, dosing equipment, monitoring/control systems, and related piping, and air supply system required.

“Depending on size and urea quantities, space and weight savings of the engine and complete SCR system with all components and urea tanks can save up to 75% on each when compared to the GE T4 diesel engine,” says Van Solingen.

In addition, says Van Solingen, “The EGR system is designed to not require any special maintenance between the normal scheduled overhaul intervals for our engines.”

Other U.S.-based customers Harvey Gulf International Marine and Oceaneering have also ordered 12V250MDC Tier 4 engines to meet stricter EPA emissions standards. Two 12V250MDC Tier 4 diesel engines will power Harvey Gulf’s new Robert Allen designed Multi-Purpose Field Support Vessel, currently under construction at Eastern Shipbuilding Group in Panama City, FL.

Meanwhile, Oceaneering has ordered five 12V250MDC Tier 4 diesel engines for its new Inspection, Maintenance and Repair (IMR) vessel MSV Ocean Evolution under construction at BAE Systems in Mobile, AL.

NEW ENGINE FROM MAN
Also on display at the WorkBoat Show was a new inline six-cylinder diesel engine range for workboats, ferries, fishing trawlers, and pilot boats based on the MAN D2672 diesel engine from MAN Engines. Offered in a range of outputs from 323 kW to 588 kW (440 to 800 hp), the basic six-cylinder engine has been proven in a wide range of on- and off-road machinery since it was first introduced in 2007. Its robustness and reliability in workboats has also been demonstrated in extensive field trials over several thousand hours of use in ferries, pilot boats and high-speed catamarans.

The modern common rail injection system used in the D2676, with fuel pressures up to 1,800 bar, ensures high mean pressures and optimized combustion. This increases on-board comfort due to reduced vibration and noise emissions. The inclusion of a Miller or Atkinson camshaft has helped to achieve an average 10% reduction in fuel consumption compared to the engine’s predecessors.

As part of this improvement in fuel consumption, all engines also comply with the current strict EPA emissions.

The new MAN D2676 marine diesel engines replace the predecessor models D2866 and D2876.

The new D2676 engines also offer the wide torque plateau that is characteristic for MAN marine engines. The 323 kW (440 hp) power unit provides 1,950 Nm of torque between 1,200 and 1,600 rpm for heavy operations, while the 588 kW (800 hp) high-performance model manages to generate 2,700 Nm between 1,200 and 2,100 rpm for light operations. This ensures maximum torque over a broad engine speed range at the lowest specific fuel consumption.

SCANIA MAKES IN ROADS
Scania has been making inroads in the marine propulsion sector because of its compact, proven engine platforms. Some recent installations in the U.S. Gulf of Mexico include the high-speed crewboat Fourchon Runner, which is powered by quadruple Scania 16L engines for a total of 2,400 hp.

Naiad Inflatables recently delivered the Karankawa, a twin-screw pilot vessel for the Matagorda Bay Pilots of Texas.  The pilot boat has two Scania DI13 77M main engines, with Twin Disc MGX-5114A gears and ZF controls. It employs shaft propulsion with driveline components from H&H and Michigan Wheel propellers. The pilot boat has a top speed is 33 knots.

At the Workboat Show, Scania showcased its Tier 3 platform, including its 16-liter V8 and 13 liter inline engines.

Scania engines are all based on Scania’s new modular engine platform—well proven in the company’s truck and bus engines. Scania V8 engines are engineered to produce high power, while maintaining a size that is compatible for auxiliary equipment. The V design reduces the overall length of the engine and ancillaries can be effectively accommodated inside the footprint of the engine.

The output ratings for Scania’s newest Tier 3 version of the 16-liter marine propulsion engine range from 550 to 900 hp, with outputs between 550 to 1,000 hp available for use in international and exempt markets.

For auxiliary applications, the range for EPA Tier 3 is 468 kW – 553 kW, and the current range will continue to be offered between 430 kW – 596 kW for international and exempt markets. Scania also expects to see an increase in the output ratings of V8 engines used for keel-cooled applications.

The output ratings for Scania’s newest Tier 3 version of the 13-liter inline marine propulsion engine range from 250 – 675 hp, with outputs up to 750 hp available for use in international and exempt markets. For auxiliary applications the range for EPA Tier 3 is 269 kW – 426 kW.

Scania’s centrifugal oil cleaner effectively removes small particles from the lubrication oil, while reducing the size of the replaceable filter cartridge. The Scania saver ring, placed at the top of each cylinder liner, reduces carbon deposits on the edge of the piston crown and reduces cylinder liner wear.

In spite of higher performance and tighter emission levels, Scania has been able to increase maintenance and oil change intervals by 25% (now 500 hours) in comparison to its predecessor.

NEW CONCEPT: TWIN FINS
During a presentation for the trade press at the Workboat Show, Caterpillar highlighted the development of its Twin Fin Propulsion Systems. The initial Twin Fin Propulsion System was retrofitted on the seismic vessel Polarcus Naila at Shipdock in Amsterdam in March 2014.

“In the seismic business, seismic assets or the vessel is a huge workhorse,” says Peter Zickerman, Polarcus Executive Vice President. “About 85 percent of its lifetime, the vessel is under constant tow in various weather conditions. It is imperative that the reliability of the vessel and its propulsion system are top notch.”

The Twin Fin is designed for vessels that operate on a diesel-electric propulsion system. With thrusters, vessels can have more cargo capacity. With conventional propellers, operators benefit from added reliability and safety. Twin Fin offers the advantages of both. It offers higher thrust performance, reduced fuel consumption, and a better emissions profile.

According to Mattias Hansson, naval architect and sales manager at Caterpillar Propulsion, development of the Twin Fin Propulsion Systems started with the company’s partners in the third quarter of 2012 and a patent application was filed in the first half of 2013. Hansson points out that the Twin Fin Propulsion System also incorporates some green aspects, including, a water-lubricated stern tube, instead of an oil-lubricated system.

For the retrofit, the twin fins were prefabricated in about 15 days and readied for the Polarcus when she arrived at the shipyard.

“This new system provides an excellent course keeping stability for the ship—important for a scientific ship like this,” says Henning Kuhlmann, Managing Director, Becker Marine Systems. Becker Marine Systems supplied highly efficient flat rudders for the installation of the Twin Fins.

The payback period for the system is about three years based on fuel consumption savings, efficiency gains, improves environmental footprint, and improves reliability when operating in remote areas.

In the coastal market, Caterpillar is supplying two harbor tugs being built for Harley Marine Services, Seattle, WA, at Diversified Marine, Inc., Portland, OR.

Each of the Harley Marine tugs will be outfitted with Cat 3516 main engines—each rated at 2,575 hp at 1,600 rev/min—and two MTA 524-T azimuthing thrusters. The thrusters will have 95.5 in. diameter fixed-pitch propellers.

Cat Propulsion’s Emil Cerdier says the MTA-T thrusters deliver “excellence of economy and performance to the tug market.” The tugs will be delivered by Diversified Marine in 2017.

Z-DRIVES GO INLAND
While Z-drives are fairly commonplace in the tug market, they are a relatively new phenomena in the inland towboat market. While some were installed as early as the 1980s, Z-drives got a major boost in 2006, when Bill Stegbauer and Ed Shearer began exploring the use of alternative propulsion, including Z-drives in inland towboats. Stegbauer, then President of Southern Towing Co., eventually opted for a design that would use Z–drives in a series of 3,200 hp towboats.

There are now about two dozen towboats operating with Z-drives and more are under construction. One of the latest series of three 6,300 hp towboats designed by The Shearer Group that are being built at C&C Marine and Repair, Belle Chasse, LA, for SCF Marine Inc. As you might guess, Ed Shearer is the President of The Shearer Group.

The towboats will each have three Cummins QSK60-M diesel engines coupled to three Steerprop SP-25D z-drives. Cummins Mid-South is supplying the engines, while Karl Senner, LLC, Kenner, LA, is supplying the Z-drives.

The Z-drives were selected only after a through analysis. “We worked closely with the both the owner and the naval architect, but at the end of the day, the decision was up to the owner, SCF,” says Karl Senner.  “Tim Power and Myron McDonough were very diligent in the selection process, and we very much appreciate the in-depth approach and attention to detail.  We pride ourselves in offering robust products and superior support, factors that are critical while operating in the demanding environment of the inland waterways.  Steerprop units are designed for the longest time between overhauls on the market.  We have also been supporting inland operators since our company’s inception in 1967.  We are very excited about our relationship with SCF and we know it will continue for a long time to come.”

Steerprop SP25D Z-drives are designed for operating in harsh environments.  These specific drive units were selected and configured similar to that of ice-class applications.  Ice class design is Steerprop’s forte, having designed and supplied Z-drives on board three of the world’s largest mechanical Z-drive ice breakers build to date. 

These will be the first inland towboats in the U.S equipped with Steerprop Z-drives.  “The inland waterways have been a major focus of our business since 1967 for Reintjes gearboxes,” says Senner. “We pride ourselves in knowing what it takes to support the high demands of our inland customers, from sizing the appropriate equipment, to stocking spare parts, and providing quick service turnarounds. We are a family-owned and -operated company, flexible to respond to customer needs quickly and effectively.” 

“We are in discussions with multiple other inland projects, but not at liberty to discuss them at this point in time.”

Z-drives have begun to catch on with inland transportation operators because of the safety, operational efficiencies and fuel savings they offer. As operators of harbor tugs have long been aware, the Z-drive can deliver full thrust in any direction almost instantly, where as the conventional rudder set aft of the propeller and even the flanking rudders set ahead of the rudder as is the practice on many inland river towboats, will sacrifice time and power by the inefficient nature of the conventional drive and rudder system.

Due to the greatly improved maneuverability with Z-drives, tows do not need to slow down in turns and bends in the river. Trip times are reduced and require a lot less fuel. A study conducted by The Shearer Group, Inc. last year showed an average of 28% fuel savings and 11% trip time savings during a set of controlled experiments with unit tows when using Z-Drives instead of conventional shafts and rudders.

SCF Marine, Inc., St. Louis, MO, is part of SEACOR’s Inland River Services group. SCF Marine operates a fleet of hopper barges along the U.S. Inland River Waterways and South America, transporting agricultural, industrial, and project cargoes.

Thrustmaster of Texas, Inc., Houston, TX, says towboats with Z-drives are not significantly more expensive than conventional towboats. The initial cost of the Z-Drives is significantly offset by reduced construction costs and installation man-hours. Shipyards have reported that the cost of building Z-drive boats is actually less than building conventional boats.

One of the latest applications of Z-drive propulsion is in a fleeting boat by Carline Companies. Carline recently added the 68 by 34-foot towboat USS Cairo for barge fleeting on the lower Mississippi.

Designed by Christian Townsend of CT Marine and built by Raymond & Associates, the USS Cairo is fitted with two six-cylinder Tier 3 compliant Cummins QSK19 main engines turning Thrustmaster TH750MZ Z-drives with 57-inch propellers.

According to Thrustmaster of Texas, a Z-drive replaces the propeller, shaft, stern tube, marine gear, rudder and steering gear all with a single unit.  Z-drive azimuthing thrusters provide maximum thrust in any direction, independent of vessel speed, offering superior pinpoint maneuverability under all conditions. Rudders are completely eliminated. Rudder drag no longer exists. All of this can be done with a lot less power. A 1,500 hp Z-drive boat can replace a 2,000 hp conventional towboat and a 3,000 hp Z-drive boat can replace a 4,000 hp conventional towboat.

Marty Ozinga presents bibles to the captains of the three vessels.

Middle River Marine christens three towboats

Three towboats—the M/V Carmalee Rose, Macey Lauren, and Ava Renee—acquired by Mokena, Ill., based Middle River Marine through the 2022 purchase of Kindra Lake Towing were christened this fall at its South