Pacific Maritime Magazine - Marine Business for the Operations Sector

M/V Rich Padden: Diversified Marine Delivers Sixth Harley Tug

 

December 1, 2017

Harley Marine's newest tug, the 80-foot M/V Rich Padden, will be well protected by a Shibata large-diameter cylindrical fender, a full Schuyler laminated rubber pad and vertical D-rubber guards covering the bow down to the waterline and six oversize tires per side. Photo by Kurt Redd courtesy of Diversified Marine Industries.

This year, Harley Marine Services celebrated its 30th year and continued its phenomenal growth with the launch of 11 tugs and barges from shipyards in the Pacific Northwest and the Gulf Coast. In Portland, Diversified Marine Inc. (DMI) also had a banner year, delivering three ASD tugs to Harley. They are the 120-foot Tier 4 Earl W Redd in January, and a pair of smaller Tier 3 boats: the 80-foot Dr. Hank Kaplan in June and its sister ship the Rich Padden in October. These 80-foot harbor tugs boast a 70-ton bollard pull and are built to the "enhanced" RAmparts 2500 design from Robert Allan naval architects of Vancouver, BC. They join the two tugs to the same design launched by DMI in 2015, the Michelle Sloan and Lela Franco and all four are based in the major West Coast ports.

DMI began its involvement with Harley in 1987, performing repairs and repowers of tugs, before they started new construction for the Seattle company in 2004 with a pair of 78-foot tugs, the Tim Quigg and John Quigg, from the original RAmparts 2500 design. The Quigg boats were powered by twin 1,500-hp Caterpillar 3512 engines, but have been re-powered with the 2,250-hp version and assigned to Los Angeles harbor.

The update of the Quigg design by Robert Allan and Harley feature a similar double-chine hull with a shallow skeg at the bow tapering to the stern, but with wider beam of 36 feet, more powerful Caterpillar 3516 C engines, higher freeboard forward for improved seakeeping and crew accommodations in the foc'sle.

The Rich Padden follows the Harley tradition of naming vessels after people who have contributed significantly to medical research and treatment in the Northwest. In keeping with Harley's policy to specify the most technically advanced equipment available, the Padden and Kaplan are also the first tugs in North America fitted with Caterpillar's new integrated propulsion system. This comprises a complete Caterpillar engine room with the C7.1, 118-kW gen-sets and two Tier 3 main engines each producing 2,675 hp (1995 kW) at 1,600 rpm coupled to the new Caterpillar Marine azimuth thruster MTA 524-T.

Unlike other ASD manufacturers, the MTA's clutch and two hydraulic pumps that power it are conventionally mounted on the engine not the ASD unit. This reduces the overall size of the ASD drive head, and permits its use in a complete diesel-electric hybrid propulsion system with a direct-drive electric propulsion motor and electric rotation motors instead of hydraulic. The maximum power rating is 4,620 hp (3400 kW) with a propeller rotation of 268 rpm.

The standard MTA on the Rich Padden features two full-capacity oil-circulation pumps for redundancy and moisture monitoring, and a reliable 4-lip shaft seal with HML-coated liner. The entire propulsion system is controlled by CAT's powerful BRC 800 control panel with full computerized monitoring via a modern graphical user interface with daylight readable displays. The serial field bus reduces wiring, and is duplicated to safeguard against power failure.

This notable addition to Caterpillar Marine's product line is the result of the recent acquisition of the Swedish company Berg Propulsion AB – best known for controllable-pitch propellers manufactured in factories in Sweden and Singapore. Berg's ASD design was initially developed for offshore and DPO installations and has been upgraded by Caterpillar Marine's engineering staff for maximum reliability and efficiency in heavy-duty applications like tugs. The propeller shafts and couplings are carbon composite from Centa. Additional equipment includes an Alfa Laval fuel cleaner, Quincy air compressors, and a Kidde FM-200 clean agent fire suppression system.

Diversified has incorporated many innovative features into their engine room layout to improve access and simplify maintenance. The main engine filters are located beside the engine in a tray at floor level, while all the ballast, bilge and fire hydrant pumps, driven by Baldor 5-hp Severe Duty electric motors, are clustered under the ladder in a cutaway in the floor. Fuel capacity is 30,000 gallons in double-bottom tanks. Free running speed is 13 knots; draft is 14 feet, 6 inches.

A Shibata large-diameter cylindrical fender surrounds the bow for ship-assist work, with a full Schuyler laminated rubber pad and vertical D-rubber guards covering the bow down to the waterline to protect the stem when handling loaded barges. The topside protection is also improved by six oversize off-highway-vehicle tires per side, with more laminated rubber around the stern.

Markey supplied the winches for all six of the Harley RAmparts tugs. For the last four vessels, the bow hawser winch is the Markey DEPC-48, a single-drum electric hawser winch driven by a 50-hp AC variable-frequency electric motor with encoder for continuous stall capability. It has many features to improve safety and speed in ship handling, including the patented Render/Recover system, high braking capacities, and fast line speeds with a rated performance of 28,000 pounds at 54 feet per minute.

The line tension display in the wheelhouse displays full-time active line-tension when drum brake is set. The design also features the NexGen Automatic Power Assisted Freewheel mode that can dampen drum motion while freewheeling. By reacting automatically to the payout speed, NexGen mode allows the Captain to keep both hands, and all his attention, on the helm controls during tethered maneuvers. The winch has a drum capacity of 500 feet of 9-inch Spectra-type line.

The compact aft winch is the Markey model DEPC-32, a single-drum model with local and remote controls, for general service on ship-assist vessels. It has a drum capacity of 250 feet of 6.5-inch Spectra line and a rated pull of 11,350 pounds at 50 feet per minute. The 20-HP electric motor can handle an overload of 150 percent of rated torque without stalling, and has a total brake capacity of 214,000 pounds.

The wide beam allows a larger footprint for the house, which results in more space on the main deck for the galley and adjoining mess and day room. There is settee seating around a large table, flat-screen TV, the stainless steel galley stove and refrigerator freezer are by Whirlpool, the microwave oven from Maytag. Wi-fi and internet are now considered standard amenities and are available throughout the ship.

To ensure restful sleep and relaxation off-watch, significant noise and vibration reduction measures have been implemented throughout the vessel. All decks and bulkheads surrounding the accommodation have been fitted with sound-dampening treatments and insulation to improve the quality of life on board, plus resilient engine mounts and advanced exhaust silencer systems.

Air conditioning and heating is handled by a pair of Daikin heat pumps located on the upper deck behind the pilothouse. This is especially important for the pilothouse, where the large area of glass causes heat to build up quickly on sunny days. The forward windows are raked forward to limit glare and now extend to the floor to expand the pilot's view of the foredeck, staple and winch. To reduce maintenance, all piping above deck is stainless steel, with containment barriers surrounding all fuel and lubrication filler pipes.

Like the Kaplan, the Rich Padden is equipped with closed circuit TV (CCTV) with a total of eight cameras on deck and in the engine room. This system was engineered and installed by Pinnacle Digital of Vancouver, Washington so the vessel's status can be observed from the wheelhouse or transmitted to observers on shore. Navigation is by Furuno instruments, the helm chair is from Llebroc Industries.

Harley Franco, chairman and CEO of Harley Marine Services, explained that longtime board member Rich Padden and his wife Laurie were original co- founders of the Cystic Fibrosis Seattle Guild, which has raised more than $100 million for CF research. "They are true champions of great causes and friends of Harley Marine Services. We are honored to name this vessels after them," he stated.

Brian Appleton, Harley Marine Services' Director of Engineering and Special Projects says the Rich Padden is the latest in a series of high performance harbor class ship assist tugs, "and we have incorporated a number of changes to an already top tier design. These include a re-designed mast configuration, raised bow fendering, and greatly increased noise-dampening insulation."

The efficient and fast construction would not be possible without a highly skilled team, explains company owner and manager Kurt Redd. "We are proud to continue building more state-of-the-art tugs for our regular customers – Brusco, Harley Marine, Shaver and Sause Brothers," he says. Redd's team is already busy with their next two newbuilds. One is a 78-foot harbor tug for Brusco whose hull is already complete and ready for fit out in the small dry dock. This will be the seventh Diversified has delivered to Brusco – all for day use and built to the same basic Robert Allan design. In the large dry dock, the first modules for a new 110-foot by 42-foot boat for Shaver Transportation are being assembled.

The company maintains a re-built 130-ton capacity American 305 floating crane that enables the crew to pre-fabricate the modules for the big Shaver tug on the levee onshore under cover, then lift them onto their 160-foot by 65-foot, 1,200-ton floating drydock where hull assembly and fitting out take place. With design by Jensen, this tug will have twin GE Tier 4 V12 engines each with a rating of 4224 HP at 900 RPM, making it one of the most powerful vessels of its size on the West Coast.

The well-appointed wheelhouse boasts large windows for better visibility and a wide array of displays including a towing hawser line tension display and a closed circuit TV with eight cameras on deck and in the engine room.

Captain Josiah Layfield has been a captain on Harley tugs in the Los Angeles/Long Beach area for nearly 20 years. He has operated the Lela Franco for Harley's Millennium Maritime, based on Terminal Island and is impressed with the design and engineering on the Kaplan and Padden. "These tugs drive like a high performance ship-assist tractor tug should. They are very responsive yet dig in when you need it. The Caterpillar z-drives have a slip mode that allows for slow-speed transit in restricted visibility and heavy traffic, with low-wash maneuvering," he says.

Rich Padden is the 36th vessel launched by Diversified Marine since 1999. Of those, 15 were ASD tugs. To celebrate the first boat's completion on schedule, the Diversified crew polished the stainless steel stacks to a gleaming reflective finish. The new tug joined the Harley subsidiary Starlight Marine Services, which is establishing a reputation for quick response and service in the competitive Tacoma/Seattle and Puget Sound ship-assist market.

 
 

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