浮筒

Dahn line From a surface buoy a vertical drop line is positioned alongside underwater pinnacles in depths to 2,500 m.

延绳法将线绑上无线电标(浮筒),并(干)绳以一定间距布放带钩之子绳。

27 Aft sponson aluminum alloy construction with machined frames and composite construction。 Houses main undercarriage and condenser for air conditioning system。

浮筒后为铝合金，装起落架和空调系统的冷凝器。