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– Graphic with permission © Bruce Roberts Yachts, http://www.bruceroberts.com/

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There are several ways of reducing the impact of the engine room on the arranegment, but they all add cost and complexity. The space occupied by a central engine room can be minimised by using a sideways engine lay-out and hydraulic or electric drives.

– Graphic with permission © Nelson Trawlers, http://www.nelsontrawlers.com/

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With hydraulic or electrical drive, the engine can be bedded in any convenient spot. It doesn’t have to be inline with the prop shaft. This enlarges the space for the accommodation, and allows more variety in layouts.

<!-- (Top) With an electric drive, one engine can be eliminated. The battery bank provides emergency power.-->

The trade-off is that the drive system is more expensive, from $20,000 to $50,000, 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.

<!-- Fig 5-4 – (Top) With electric or hydraulic drive, or a mechanical V-drive, the engine can be placed astern -->

== Galley ==