by boat

基本解释

Admittedly we can make the journey by train, but there is no harm in our travelling by boat.
乘车固可，乘船亦无不可。
《新英汉大辞典》
So whether they go to school by car, on foot, on bike or by boat, or just meet the school bus, parents all over the world have this same feeling about their children.
不管接送孩子是开车，是步行，是骑自行车还是乘船或是等校车，全世界的父母们对他们的孩子们都有着同样的感情！
edu.sina.com.cn
In 2007, NASA scientists joined Russian scientists to travel down the river by boat for three weeks to study the transition and how these types of ecosystems may be affected by climate change.
在2007年，NASA的科学家联合俄罗斯科学家乘船考察了这条河的变迁（为时三周），以及这种类型的生态系统可能如何被气候变化所影响。

From there it was almost nine hundred kilometers by boat down the Yukon River to the town of Dawson were gold had been discovered.
They traveled on foot, by horseback and by boat to reach the gold fields.
One excellent way to see the wildlife of Chobe is by boat.

They live in the factory's dormitory, and survive on food deliveries brought in by boat.
ECONOMIST: Thailand’s floods