The noise level of a yacht engine at sea depends on the size of the yacht, the type of engine and how fast the yacht is cruising. For guests, engine sound is an important part of comfort, especially during long passages. Modern yachts are designed to reduce noise, but it is helpful to understand what levels are normal and why some yachts are quieter than others.
Most charter yachts produce a gentle humming noise while cruising. Smaller motor yachts tend to be slightly louder because the engine room is closer to the cabins. Larger yachts usually have better insulation, more space between the engine room and guest areas and more advanced vibration control. This makes the sound far softer and more distant.
Although it varies, many yachts fall within these ranges.
For comparison, normal conversation is around sixty decibels and a vacuum cleaner is around seventy decibels. Most guests find the sound of a cruising engine similar to background noise in a moving car.
Several factors influence how loud the engine feels on board.
When the sea is calm, the engine noise is steady and smooth. In rougher seas, vibrations can be slightly more noticeable.
Modern charter yachts are built to prioritize guest comfort. Many engine rooms are fitted with thick insulation panels, noise reducing materials and advanced mounts that absorb vibration. This means that even on long passages, the sound is controlled and does not disturb time spent on deck or in cabins.
In practice, guests quickly get used to the soft hum of the engine. It becomes part of the rhythm of the trip and often blends naturally with the sound of the sea.
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