These early tankers used a cumbersome refueling system in which the receiver aircraft would grapple a contact line trailed by the tanker and then winch in the refueling hose to make the connection.

• 这些早期的加油机使用的是一种笨重的加油系统，受油机必须象空中格斗那样与受油机建立起连接航线然后用绞车牵入软管建立连接。