Key Takeaways Outboard, inboard, and sterndrive are the three main engine types used to power boats. Outboards are portable and easy to access while inboards maximize internal space.Two-stroke engines are lightweight and simple but less fuel efficient. Four-stroke engines are more complex but burn cleaner and meet emissions standards.Gasoline engines are the most common due to lower cost and weight...

Key Takeaways: Volvo Penta offers a wider range of recreational marine engines, while Cummins focuses on commercial and industrial applications.Volvo Penta engines excel in power, innovative features and integrated docking systems. Cummins emphasises reliability, efficiency and simple maintenance.Volvo Penta has a larger marine dealer network, but Cummins commercial support is unmatched for industrial users.Upfront cost is lower for Cummins engines...

Key Takeaways: Volvo Penta and Yanmar are two of the most popular marine engine manufacturers.Volvo Penta engines tend to be more powerful, while Yanmar engines are known for their reliability and fuel efficiency.Volvo Penta offers a wider range of engine types including sterndrives, inboards, and IPS pod drives. Yanmar focuses on inboard diesel engines.Volvo Penta has a larger dealer network...

Key Takeaways: Volvo Penta engines excel at low-end torque while Mercury optimizes top-end horsepower.Volvo Penta offers innovative features like Forward Drive but has fewer engine choices.Mercury MerCruiser is used by more boat builders and has more widespread service locations.Fuel injection, catalytic converters, and closed cooling systems are standard for emissions compliance.Consider power, features, maintenance costs, availability, and warranties when choosing...

Key Takeaways: Ocean temperatures have warmed by over 1°F since 1900, causing habitat shifts and disrupting marine food chains (1).Ocean acidity has increased 26% since preindustrial times, threatening corals and shellfish (2).Mangrove forests that provide vital nursery habitat declined by 20-50% over the past 50 years (3).Fish stocks are declining with warming waters, down 4.1% globally from 1930 to 2010...