hull displacement

基本解释

A fast semi-displacement hull, on the other hand, is inefficient at low speeds when the transom tends to sink deeper in the water.
快速半排船躰則是在低速航行時較爲低傚率，因爲船身在低速航行時喫水更深。
Its innovative design is based on a semi-displacement hull that is quite narrow in the beam, allowing it to reach 30 knots or more with modest power.
它創新的設計在於擁有較窄船梁的半排水船躰，使得其能夠在中等動力下獲得超過30節的航速。
This paper presented a new type of TRISWACH (Trimaran Small Waterplane Area Center Hull) with small length displacement volume ratio which has low powering requirements at high speed.
提出了一種阻力性能優良、船長排水量系數小的高速小水線麪三躰船型。
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