The bulbous bow of a ship increases the hull efficiency and reduces fuel costs. The bulb puts the bow wave further forward. The actual beginning of the bow of the ship will be at the trough of the bow wave, thus the bow does not need to push against a ‘wall of water’. The bulb stem also has a favorable effect on the wave system around the ship. The ideal situation is one where the ship cuts through the waves, whilst generating no waves by itself; for every wave that is created by the ship is lost energy.
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