Spirit - Improving everyday operations

The patented Injector technology, developed by the company Injector Trawldoors, transfers Bernoulli's aerodynamic airfoil principles to the hydrodynamic environment. This has made it possible to develop a highly effective deflector, creating the spread force by underpressure (vacuum).

The design has undergone comprehensive ANSYS analysis, flume tank-scale testing and open water full-scale testing. All proved that the Spirit Deflector has unprecedented qualities.

The logged data from our full-scale testing of our F-32 model in open water, confirms that the technology represents numerous benefits for the user.

Lift (cl)     Drag (cd)     Lift/Drag

(tonnes)  (tonnes)       (cl/cd)

17,4          3,0          5,94:1

18,4          3,5          5,46:1

21,0          4,1          5,22:1

User benefits:

The surplus lift created may be utilized in:

- Fuel savings

- Easier obtained separation

- Less strain on engines

- Flexibility in streamer configuration

- Streamer capacity

- Streamer separation

- Reduced carbon emission

The "high aspect" design is stable at low angle of attack (AoA), thus giving reduced need for additional and downsized equipment for smaller jobs. The design represents reduced tip vortex effect.

The deflector, together with our foiled separation rope solutions, represents significant fuel savings. The estimates shows an obtainable fuel saving of at least 10%. The foiled separation ropes may represent additional savings of 5-7%. The foils also represent a positiv impact of offset figures.

Facts & figures

Some key figures for the F-32 model:

• The size of the F-32 deflector: 32m²

· Height of deflector: 9830mm

Including the float: 11530mm

· Weight of deflector (incl. Float): 6500kg

· Spare buoyancy: 100%

· Length of float: 7488mm

· Dia of float: 1700mm