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→Engine Room
The trade-off is that the drive system is more expensive, and the larger accommodation increases the fitting out cost. So the trawler is substantially more expensive to build. Repair expertise is harder to find for hydraulic and electric drives; although construction and farming use hydraulic extensively.
With an electric drive, build costs can be contained somewhat by using only one engine. If the engine fails, an electric drive can use the a house bank with suitable capacity for full emergency power.
[[File:EngineLayoutAstern.png|thumb|200px|left|With electric or hydraulic drive, or a mechanical V-drive, the engine can be placed astern]]