 |
| |||
| underwater object | |||
| submerged object (Off Gorleston, Norfolk, a dredger struck a submerged solid object 30 miles offshore, but when it went back using echo sounders, no object could be found; May 1975 (Janet & Colin Bord, "Unexplained Mysteries of The 20th Century") ART Vancouver) | |||
| подводный объект: 3 phrases in 2 subjects |
| General | 2 |
| Technology | 1 |