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Old 11-07-2017, 03:57 PM   #11
Lepke
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City: Between Oregon and Alaska
Country: US
Vessel Name: Charlie Harper
Vessel Model: Wheeler Shipyard 83'
Join Date: Jun 2016
Posts: 1,673
Commercial tugs have large blowers to bring in large volumes of air. Usually a smaller exhaust blower to remove some of the air. Incoming air is dispersed right over the diesel intakes. Even with really big diesels at full power the engineroom is only slightly warmer than the rest of the inside.
As long as you have sufficient incoming air vents and you have a turbo diesel with an aftercooler, a cooler engineroom probably won't make a noticeable difference. But a turbo w/o an aftercooler or natural engine might benefit.
In a hot climate, a cooler engineroom makes less for the AC to overcome.
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