Photo: Norges Sildesalgslag
Norwegian environmental measures in the deep-sea fishing fleet
NORWAY
Wednesday, April 21, 2021, 10:00 (GMT + 9)
The Norwegian Seafood Research Fund (FHF) announces NOK 3.5 million for the work, the goal is to reduce greenhouse gas emissions by 50 percent
The announcement is within FHF's Project in Business scheme
- In connection with the design and construction of a new deep-sea fishing vessel, a technology package will be developed and implemented that consists of selected measures that reduce climate emissions (CO2) by 50 percent or more, FHF writes in the announcement.
Not possible in the short term
- In the deep-sea fishing fleet, it is not possible to achieve zero emissions in the short term, but there is a need to document the effect of environmentally friendly technologies, so that the most effective measures can be implemented on the way to the green shift, writes FHF.
Wärtsilä VS 6215 Fishing vessel (Photo: Wärtsilä)
Examples of technologies that reduce greenhouse gas emissions CO2 are:
- ORC - Organic Rankine Cycle », a technology that produces electricity from surplus heat
- electric winches that regenerate energy
- foils in the foreship, «wavefoils», which dampen ramming movements, reduce resistance and contribute to propulsion
- batteries to even out peaks «peakshaving»
use of shore power where possible
- removable trawl blocks to relieve rudder in bad weather (large rudder deflections give great resistance)
- optimal design of foreships to reduce resistance in waves
- optimization of main engine, gear, propeller and rudder
- automatic setting of optimal speed and propeller pitch as well as «mode shift» (switching between diesel-electric and direct operation) based on software and sensors that measure thrust, torque and fuel consumption
- use of new energy carriers (hydrogen, ammonia and methanol) which can initially replace diesel-powered auxiliary machinery to produce part of the electricity used on board.
As part of the design, the various measures must be documented in relation to the operation and effect on emissions of the greenhouse gas CO2. Total CO2 emissions calculated shall be compared with emissions from similar vessels built between 2003 and 2006.
For both vessels, the emissions are stated as:
- total CO emissions in tonnes
- kg CO2 / kilo round fish
- kg CO2 / kilo landed raw material (including residual raw material)
Selected measures shall be implemented in one or more new buildings that are instrumented for measuring fuel consumption. Full-scale measurements will also be carried out to verify that greenhouse gas emissions are reduced in accordance with the main objective.
Author: Camilla Kaevold / Norges Sildesalgslag (translated from original in norwegian)
[email protected]
www.seafood.media
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