How to reduce water resistance when navigating a boat

How to reduce water resistance when navigating a boat

When a boat moves through the water it has to overcome a certain water resistance.

Part of the resistance is formed on the bow where the boat penetrates through the water.

The second part of the resistance occurs on the stern where the pillar of water creates a vortex and slows down the boat. When the boat accelerates and when the water column is separated from the rear of the boat, the water resistance decreases, and at that moment the boat begins to sail faster.

The speed of the boat where the water column separates from the stern of the boat can be reduced. It is enough to set an extension without a back cover. Instead of the rear side, a metal mesh can be set through which water can enter and exit freely.

With this extension (n), at very low speed the water column is separated from the stern (1). Thanks to this, even at low speed the boat starts to sail more easily. This reduces fuel consumption and speed increases.

In addition to fuel economy savings, the extension (n) can also be used for other purposes.

When the boat is stationary (2, 3), it can hold larger fish caught that can not pass through the metal mesh.

In this section you can also hold a drink for cooling.

The dishes can also be left after the meal.

Food remains can also be thrown away in this area. Small fish that pass through a metal mesh can freely eat food remains, and they can be easily caught there.

The cost of installing this extension is minimal. It is enough for the fork to secure the sheet bent in the form of a stern, and at the end weld the metal mesh.


Other of my technical analyzes and innovations can be found in this book.