MaK keeps trouble out of Harms way

The third generation of Harms AHTs followed in 2007

and

2008 with the sister ships

Janus

and

Ursus.

Another two newbuildings,

Uranus

and

Orcus, are expected for delivery in 2008

and

2009. Finally, two ships to be named Pegasus

and

Centaurus

are also due into service next year.

All the ships are being built at Mützelfeldtwerft in Cuxhaven, Germany, on behalf of MAN Ferrostaal AG, Essen,

and

are intended for global offshore operations. They are also all powered by MaK main engines

and

Cat generating sets.

Primus is propelled by two MaK 9 M 25 main engines, each rated 2,970 kW at 750 rpm, providing a continuous bollard pull of 104 tons. The ship is 48.87m long, 13.80m wide

and

draws 5.20m.

Janus

and

Ursus are considerably larger, with a length of 65m, a beam of 18.5m

and

a draught of 6.8m. Both rely on two MaK 6 M 32 C plus two MaK 8 M 32 C main engines in father

and

son configurations. These four engines provide 500 kW per cylinder at 600 rpm for a total 14,000 kW power

and

220 tons continuous bollard pull.

The father

and

son configuration means both deliver reliable power at full throttle towage

and

efficient power during st

and

by operations. Janus

and

Ursus also utilise two Cat 3412 gensets

and

one Cat 3056 emergency genet each.

Harms most recent newbuildings, Uranus

and

Orcus will be even more powerful. Four MaK 9 M 32 C main engines, rated 4,500 kW at 600 rpm each, will provide 18,000 kW total power, a minimum expected bollard pull of 280 tons

and

17 knot speeds. Vessel size will again slightly increase, to 74.3m length, 18.5m beam

and

8.50m draught.

Uranus

and

Orcus will have twin Cat 3412 gensets

and

a single Cat C9 emergency set each for electrical power supply. Zeppelin Power Systems, the German Caterpillar dealer, has also delivered four shaft generators for PTO. The two ships of the Centaurus class expected in 2009 will be equipped with two MaK 9 M 25 C marine engines, rated 2,970 kW at 750 rpm each. As with Primus, these AHTs will provide 16 knots

and

a bollard pull of about 100 tons.