4.操縱性試驗(yàn) Maneuvering test4.1回轉(zhuǎn)試驗(yàn) Turning test (Only for first vessel/僅首制船)4.2Z形操縱試驗(yàn) Z-Maneuvering test (Only for first vessel/僅首制船)4.3急停倒車/正車試驗(yàn) Crash stop astern test and ahead test急停倒車試驗(yàn)是為了證明主機(jī)能適應(yīng)船舶的應(yīng)急停止的能力和了解從下令緊急停車直至船舶航速降至零為止的時(shí)間和距離