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Old 11-14-2013, 06:58 PM   #89
rjtrane
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City: Palmetto Bay
Country: USA
Vessel Name: Sunshine
Vessel Model: Island Pilot DSe 12m Hybrid
Join Date: Apr 2013
Posts: 268
Art. With all due respect, you are incorrect. Pods and I /Os have significantly less drag than that of a shaft, strut and rudder. Add the efficiency of counter-rotating props and the difference becomes more dramatic.

IPS pods with forward-facing props and exhaust through the hub demonstrate the biggest increase in performance filled by Zeus and I /Os.

This is not my opinion. Different sea trials have been performed comparing the different pods with slant shafts on the same hull model. As I recall boat test.com has performed and reported on sea trials.

Differences in performance are greatest at the higher speeds - typically 20+ knots. At displacement speeds, performance is closer to traditional slant shafts.
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Reuben Trane
"Sunshine" - Island Pilot DSe 12m
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