PROPELLER NOZZLES: TYPE OPTIMA
The Optima nozzle brings the best of both worlds together. An improved forward thrust performance comparable with the conventional 19A nozzle, combined with the good reverse thrust performance of the 37 nozzle. It has a slightly longer and higher inlet profile and the propeller is located just behind the middle of the nozzle. The outlet profile is practically identical to the profile of the type 37 nozzles. After an intensive period of designing, developing and testing we launched the Optima nozzle in 1998.
Specifcations
ADVANTAGES
In order to improve the propulsive efficiency of the 19A and 37 nozzles, Damen Marine Components carried out several research projects. This resulted in designing a nozzle with a modified profile where the propeller rotates further backwards in the nozzle. Our Optima(l) nozzle has the following advantages:
Available models
This Optima nozzle is ideal for several types of vessels thanks to the good forward and reverse thrust performance and the extremely strong and stiff profile. It’s suitable for icebreakers, inland ships, pushbusters, tugs, workboats, dredgers and various other vessels that combine relatively high power outputs with heavy sailing conditions. The nozzle can be delivered in different executions (L/D = Length Diameter ratio):
Optima nozzles in stock
1 662 mm diameter
Box width:1 500 mm;
Box height: 1 231 mm;
Flattened below CL nozzle: 985 mm;
Drawing No.: P0795/1662;
Class: B.V.;
DMC PON: NOZ14183821;
No: 1;
1 662 MM DIAMETER
Box width:1 500 mm;
Box height: 1 231 mm;
Flattened below CL nozzle: Rond;
Drawing No.: P1084/1662;
Class: L.R.;
DMC PON: NOZ14190363;
No: 1;
1 714 mm diameter
Box width:1 550 mm;
Box height: 1 262 mm;
Flattened below CL nozzle: 1 000 mm;
Drawing No.: St/1714/Optima;
Class: B.V.;
DMC PON: NOZ14180250;
No: 1;
1 714 MM DIAMETER
Box width:1 550 mm;
Box height: 1 262 mm;
Flattened below CL nozzle: 1 000;
Drawing No.: St/1714/Optima;
Class: L.R.;
DMC PON: NOZ14180251;
No: 1;
Single Weld Spinning Method
Damen Marine Components has developed the Single Weld Spinning Method based on a single weld seam on the inner side of the nozzle. This machine can produce nozzles with an inside diameter ranging from 1,000 mm to 5.3 m outside. Using a completely automated system, the spinning machine can handle stainless steel, duplex, steel and special steel materials.
A nozzle is a sustainable product by definition because it significantly reduces fuel consumption and CO² emissions. The Spinning Weld Method makes the production of the nozzle even more environmentally friendly, since there is less welding and grinding, this saves energy and emissions. In addition, this method saves production time and enhances DMC’s stable price/quality ratio, which makes it more cost efficient.
ADVANTAGES
- Cost efficient
- Smoother nozzle surface
- Reduced fuel consumption and CO² emissions
- Efficient production process
