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This Is How Two Contra-rotating Propellers Can Make Ships More Energy Efficient

  • ENN faviconENN

    Nov 18, 2025, 4:50 pm221 ptsTop
    By using two propellers that rotate in opposite directions, a ship can use less energy to move forward. 
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Welcome to EcoTopical Your daily eco-friendly green news aggregator.

Leaf through planet Earths environmental headlines in one convenient place. Read, share and discover the latest on ecology, science and green living from the web's most popular sites.

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