Page 49: of Marine News Magazine (June 2006)

48 50

Nordane Shipping of Svendborg, Den- mark took delivery of the first of two Ice

Class 1A FS tugs from Irving Shipbuild- ing Inc of Canada in late January 2006. To ensure the lowest possible noise levels and to comply with the stringent Danish

Maritime Authority regulations, floating floors are fitted throughout together with double thickness joiner panels and exten- sive insulation in the engine room.

Two remote-controlled FiFi monitors supplied by FFS capable of a discharge rate of 1,200 m3/h each are fitted just aft and above the wheelhouse. The monitors are supplied by a dedicated pump of 2,700 m3/h capacity, driven off the front end of the port main engine. A water curtain of 300m3/hr is also supplied by the pump, or alternatively foam can also be supplied at 300 cu. m./hr.

Below the waterline, the tug is fitted with a large "escort" keel forward to pro- vide effective indirect towing capability and enhance course keeping, especially when running astern. The forward end of the skeg has been fitted with an icestop, designed to prevent the hull riding-up onto the ice. T he aft end is fitted with two iceknives to divert large pieces away from the propellers.

Stevns Iceflower is the third iceclass vessel delivered by Irving Shipbuilding

Inc since September 2005. Measuring 30.8m x 11.14m, the LR-classed Stevns

Iceflower is powered by a pair of Cater- pillar 3516BHD diesels, developing 2,500hp each at 1,600 rpm. Heavy duty 2.4m diameter controllable pitch US255 Z drives were supplied by Rolls-Royce

Aquamaster.

Trials results were even better than the builder had anticipated. A speed of 14 knots was achieved, together with a max- imum bollard pull of 60.4 tons ahead, 56.9 astern.

To provide extra flexibility to help secure niche charters, a Kamewa 45TV bow thruster of 150kW is also fitted. A uxiliary power is provided by two Cater- pillar C9 gensets developing 165kW each.

F or towing and anchor-handling opera- tions, a set of 200mm towpins is installed in conjunction with a 150 tonne Rid- derinkhof aft towing winch, Ridderinkhof tugger winch/capstan, a 75 tonne Wash- ington Chain tow-hook and a stern roller.

The frequency-controlled aft winch is a single drum type (complete with spooling gear) capable of storing 762m of 51mm wire.

T he 150 ton Ridderinkhof electric line handling winch on the raised foredeck is capable of storing 400' of 3 ¼ Spectra line. This winch is also fitted with heavy duty spooling gear.

Comfortable accommodation for 6 is provided (all in single cabins). The Cap- tain and Chief Engineer's cabins are locat- ed on the main deck, the remainder on the lower deck.

Circle 99 on Reader Service Card

June, 2006 • MarineNews 49

Circle 251 on Reader Service Card

You’ve known us for quality rigging products since 1890. Our compre- hensive block, fairlead, sheave and alloy forging lines have met the chal- lenges of the most demanding appli- cations around the world. And in the process, we’ve proudly taken part in the shaping of American history; from salvage operations at Pearl

Harbor and construction of the Grand Coulee Dam to

San Francisco’s BART and the space shuttle.

Whatever your applications, we’re committed to serving you with the finest in standard and custom engineered products. For further information contact your nearest dealer or call us at: 503/651-3175

Skookum

PO Box 280, Hubbard, OR 97032

FAX 503/651-3409

Now more than ever,

Skookum signifies value in today’s cost-conscious world.

Blocks & Rigging

AN ULVEN COMPANY 1-800-547-8211 • www.skookumco.com

SINCE 1890

Circle 276 on Reader Service Card

SBA 8(a) BD / SDB Participant “Responsive, Efficient,

Effective”

Regulatory Compliant

Security Products

MARINE SECURITY

SERVICES •USCG / MARAD USCG / MARAD

Certified

Maritime Security

Awareness Course •Ship Security Plan Ship Security Plan

Audits [email protected] www.yorkmaharinc.com 866.823.9422

Circle 223 on Reader Service Card

Ice Class Tugs from

Irving Shipbuilding

JUNE MN2006 7(49-56).qxd 6/5/2006 10:23 AM Page 49