With the fact that this type ship has more principal dimension parameters than the normal ships, a principal dimensions optimization method was developed.

针对该型船主尺度参数众多而不易优化的问题，提出了一套主尺度优化方法。

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It is important to maintain the ship chamber horizontal and keep cable tensions in equilibrium during the running of the hoisting fully balancing type ship lifter.

全平衡钢索卷扬提升式升船机在升降过程中保持船厢水平和提升钢索索力均衡对安全运行至关重要。

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The author also suggests that when a decision of investment in a new-type ship is being made, the calculation of the economic targets should be based on the economic life of the ship.

作者还认为，在新船型论证作投资决策的时候，应当按经济寿命计算经济指标。

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Originally designed as a specialist anti-submarine ship, the Type 22 frigate evolved into a powerful surface combatant with substantial anti-surface, anti-submarine and anti-aircraft weapons systems.

BBC: Navy frigates in Portsmouth 'to be sunk or scrapped'

Originally designed as a specialist anti-submarine ship, the Type 22 frigates evolved into a powerful surface combatant with substantial anti-surface, anti-submarine and anti-aircraft weapons systems.

BBC: Four Royal Navy frigates in Portsmouth Harbour for sale

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