Слово встречается в следующем контексте:касаемо яхт какой propulsion type лучше-S-drive or shaft drive, shaft drive- это ведущий вал
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Although the solution to this dilemma may become rather complex, we can still characterize several advantages to each of the propulsion types.
The advantages of the S-drive:

1. Compliance with modern manufacturing methods.
2. Simple assembly process.
3. Speed.
4. Ability to sail in shallower depths.

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