没有真正的方向舵，所以只有在动力驱动的情况下才能操控船只。

There is no rudder as such, so the craft can be steered only when under power.

youdao

这些改变使得船只的驱动力从划桨转到了三个巨型三角帆。

These changes shifted the motive power of the vessel away from oar-power and onto the three huge lateen sails.

youdao

这些改变使得船只的驱动力从划桨转到了三个巨型三角帆。

These changes shifted the motive power of the vessel away from oar-power and onto the three huge lateen sails.

youdao