Page 67: of Maritime Reporter Magazine (November 2023)

TECH FEATURE: GEARS

Image courtesy Reintjes

Karl Senner Chris Senner

Reintjes Hybrid System hybrids, fully electric vessels, energy storage systems, fuel cells, alternative fuels, and everything in between.

Key areas of increased penetration in the market include de- livering Reintjes solutions to the lower end of the horsepower range, from 500 hp per shaft line and up, said Karl Senner, and

Images courtesy Karl Senner LLC its increased focus on the electri? cation side of the business, adding key personnel and capability, leading to a bevy of new pipeline operations, which was a prime driver for the invest- projects including: ment. Pipe handling and connection work can now take place • Propulsion solution for a fully electric inland towboat; securely on deck, which will greatly reduce the risk of man • Hybrid gears for an electromechanical hybrid pro- overboard. These vessels will also enhance and improve Great pulsion system onboard a ferry being built by Senesco for the Lakes’ pipe and anchor operations. Further, the Multi Cats’ two

State of Maine; crane and multiple winch and wire tugger arrangements will • L-Drives with integrated permanent magnet motors signi? cantly reduce manual work and the risk of soft tissues in- for HYDROGEN ONE, being built for Maritime Partners; and juries. These vessels support our strong safety culture and gives • Several new passenger vessels on the East Coast, us the ability to dredge with enhanced operating ef? ciencies each including gearboxes and electrical system, including in- needed to maintain our shorelines and waterways.” verters for batteries and the main switchboard. The two identical vessels measure approximately 99 feet in • Two REINTJES Dredge Gearboxes (RDGL 630), length and are each powered by three EPA Tier III Caterpillar each driving 6300hp cutter heads for Callan Marine. C32 TTA engines capable of meeting speeds of 10.2 knots and • Main Propulsion Gearboxes, Bow Thrusters (BT), will have maximum bollard pull of approximately 32 short tons.

BT Gearboxes, Intermediate Shafts with Shaft Brakes for BTs, Onboard Karl Senner, LLC equipped the M/V Cape Hat-

Main Propulsion Control System, and BT Control System for teras with three WAF 464L Reverse Reduction Gearboxes and

Port Jefferson Ferry being built at Eastern Shipbuilding Group. a two-Station Main Propulsion Control System.

While the Karl Senner LLC reference list is long, a strong Each gearbox is ? tted with Vulkan Torsional Couplings, recent win was last-month’s delivery of a pair of Damen 3013 Mechanical Trailing Pumps (allowing for unlimited free-

Multi Cats, built by Conrad Shipyard for Great Lakes Dredge wheeling), and Temperature Control Valves.

& Dock. Equipped with two large winches and two deck cranes, the

Houston-based dredging contractor Great Lakes Dredge & dredge support vessels are able to perform a wide range of tasks

Dock Corporation announced it has taken delivery of the Cape including handling submerged and ? oating pipelines as well as

Hatteras and the Cape Canaveral, the two Damen 3013 Multi anchor handling and logistics supply. Ef? ciency is also greatly

Cats built by Conrad Shipyard in Morgan City, La. enhanced by eliminating the need for assorted ? oating support “This is a milestone for our company and the U.S. dredging equipment such as derrick barges, towboats and anchor barges.

industry,” said Chris Gunsten, Great Lakes’ senior vice presi- The two vessels are the ? rst Damen Multi Cats to be built dent of project services and ? eet engineering. “The Multi Cat in the U.S. and are fully compliant with the U.S. Coast Guard brings step change safety improvements to Great Lakes’ dredge and U.S. Army Corps of Engineers stability criteria.

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