Two heavy duty rated Cummins KTA19 M4 (700 hp @ 2100 rpm) engines, fitted with Reintjes gear-boxes (WAF244, 2.5391:1 ratio) offer the main propulsion solution for each vessel with 115 ton full load capacity. Electrical power on each vessel is supplied by two 50 Kva generating sets fitted with Cummins 4BT3.9 D (M) (42kwe @ 1500 rpm) engines and Stamford alternators. All items were supplied to LRS requirements.

“On the delivery from the Port of Cape Town to Durban, we recorded an fuel consumption of 50 lt/hr per main engine and 4lt/hr per generator set,” says Potgieter, divisional mana-ger marine, Cummins South Africa. This was achieved @ 1650 rpm with an average speed of 11.8 knots. Russel Patience, applications engineer marine, Cummins South Africa, performed engine installa-tioninspections and con-firmed 14 knots @ rated speed during sea trials.

Potgieter says more marine services companies demand Cummins power for the lowest cost-of-operation and the highest availability. Cummins power solution projects include the supply of 100 Kva, 6BT 5.9 D(M) generator sets for the five harbour tugs being built in Durban by Southern African Shipyards, QSK19 M (660 hp @ 1800 rpm) main propulsion engines for the fuel bunker barge for Unilog that is being built in Durban by Dormac, a NTA855 D(M) ( 385hp @ 1800 rpm) engine and a 480 Kva generator set with a KTA19 D(M1) ( 386 kwe @ 1500 rpm) engine to re-power a bow thruster for Smit Amandla Marine in Durban on the MV Pentow Service and MV Smit Madura respectively. The MV Santa Monica owned by SA Tuna Exporters in Cape Town is now powered by a KTA19M3 (640 hp @ 1800 rpm) engine and fitted with a Twindisc MG5071 gearbox.