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table, DJ booth and dance floor. An open deck aft doubles as a board- ing station and covered observa- tion deck. The third deck has a pri- vate party dining room with its own full bar and wait station, plus a 270 degree panoramic view out the double-glazed tinted windows and direct access out onto the exte- rior deck.

The fourth deck is a wide-open observation area, providing pas- sengers a viewing platform some 35 ft. above the water line.

Other features include two storerooms below the main deck with walk-in reefer and freezer, and a closed-circuit TV system, so passengers can observe the dance floor from anywhere on the boat.

Circle 68 on Reader Service Card

Vessel Specifications

Shipbuilder: .Chesapeake Shipbuilding Corp.

Owner/Operator: .. .. .Premier Yachts, Inc., Chicago

Flag: U.S.

Classification: ... USCG Subchapter "K"

Length, o.a.: .... 160 ft. (48.7 m)

Length, b.p.: 138.9 ft. (42.3 m)

Gross Tonnage:... 949

Draft (design): 7 ft. (2.1m)

Speed, Service: ... 12 knots

Main Engines: ... Detroit Diesel 12V71N

Total hp: 1,000

Propellers:44 in. Michigan Wheel Nibral, Dyna-Quad

Thrusters: Schottel STT-060,170 hp, 630 MN Diam.

Generator Engines: ..Detroit Diesel 6-71T, 180 kW

Thruster Drive: ... Reliance SCR Drive

Generators: (2) @ 180 kW

Fin Stabilizers: ... Bilge Keels

Reduction Gears: . Twin Disc MG-514

Engine Controls: .. Kobelt Electronic

Steering Controls: . . .Kobelt Dual Pump Elect./Hyd.

Shafting: Aquamet 17

Coatings: International

VHF Radio: ICOM

Radar: Furuno

Tan'erliq (Alaska native words for 'polar bear' and 'black bear,' respectively) have been specially designed and developed for

Crowley Marine Services (CMS) under contract with Alyeska

Pipeline Company for tanker escort operations in Valdez Harbor and Prince William Sound, Alaska.

Nanuq is powered by two

Caterpillar 3612 engines driving twin Voith Schneider cycloidal propulsion units. Both vessels will be outfitted for tanker escort ser- vices, ship handling, firefighting and emergency and spill response in Alaskan waters. Design features include a hydrofoil-shaped skeg, welded steel construction, trans- verse framing, wing tanks and ice belting. Naval architects for the project were Guido Perla &

Associates, Seattle.

Circle 69 on Reader Service Card

Dakota Creek Shipyard's

Nanuq

Nanuq, the first of two 153 ft., 10,192 hp enhanced tractor tugs has been launched from Dakota

Creek Shipyard, in Anacortes,

Wash. Nanuq and sister vessel

L6170A SPECIAL FEATURES

Circle 278 on Reader Service Card

Is your engine brand failing to meet expectations!

Hie alternative is now even more attractive.

Building a new boat or repowering?

Tired of engines that don't live up to your expectations?

Then look at what the new version L6170A offers. You will never go back to what you had.

Call free for

L6170A brochure.

West (Seattle) 1-800-762-0165

Alaska (Anchorage) 1-800-478-3006

Northeast (Mass) 1-800-480-4223

Southeast (Florida) 1-800-843-6140

Fax 206-782-5455

E-Mail [email protected]

Web www.northern-lights.com

Since its introduction the 23 liter, Lugger 6170A has proven itself in the toughest jobs on the water; tugs, draggers and passenger ferries.

Now this big bore, inline six brings you the long life, total dependability and low life-cycle costs you expect from a Lugger and up to 900 hp.

More power, low stress

Rated at 700 hp for continuous duty the 6170 gives you 2086 ft lbs of prop twisting torque at 1500 rpm. With a conservative hp

Inline muscle to cid ratio of 0.5 to 1 it works hard without straining.

Even its 900 hp high output rating is only a 29% increase over continuous.

This is an engine rated for the long haul in whatever type of boat it is installed.

Cut your fuel costs.

With specific fuel consump- tion rates going as low as 8 0.331 lbs/hp/hr, the L6170A will lower your operating costs and extend your vessel's working range. This economy comes from proven mechanically controlled variable fuel injection timing.

Fly-by-wire, electronic black boxes are not needed. Lugger gives you proven technology and lower operating costs. stum pump. | 13. Gear oil cooler. 14. Dual 24 volt, 10 hp starters. Air start (opt.). 15. SAE-0 flywheel housing. ^ _ . 16. Thermostatic stainless steel, engine lube oil cooler. • Freshwater aftercooler for less smoke. • Dual spin-on fuel filters. • Oil change pump for engine and gear (opt) . • Dual spin-on oil filters. • Bosch-type in-line fuel injection pump • Oil sump doors for in-vessel rebuilds. • VDO main and auxiliary instrument panels.

Optional Front PTO l. 2. 3. 4. 5. 6. 7. 8.

Cast-iron, liquid cooled, exhaust manifold.

Liquid cooled turbocharger for improved performance and fuel economy.

Optional Airsep® oil vapor trap

Individual, four valve cylinder heads.

Rebuild one cylinder at a time.

Spin-on coolant filter/conditioner.

Cast expansion tank. No welds.

Long life cupronickel, tube-type heat exchanger.

Self priming centrifugal seawater pump for heat exchanger cooled engine. Accessory PTO #2 available on keel cooled engine. 9. Variable timing fuel injection 10. PTO #1 drives alternator on electric start

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