- The coast line was crowded with u-boat nests .
- On the second night we approached the u-boat stream .
- The next day the u-boat was towed by a trawler to iceland .
- The small ship came around the headland and steamed toward the u-boat .
- The lethal power of the air in u-boat warfare was yet to come .
- The u-boat packs were kept underwater and harried continually .
- Hitler complained that this single invention was the ruin of the u-boat campaign .
- One night his ship, the stork, pursued and rammed a u-boat in the darkness .
- The problem of how to contact the u-boat on monday had been nagging at the back of his mind .
- The work of mercy was interrupted by the appearance of u-boat and the british ships were compelled to withdraw .
- 更多例句： 1 2