On 23 February, " Triton " detected a previously uncharted seamount with her fathometer.
12.
Then, during an overhaul, she received a fathometer, a Kleinschmidt distilling unit, and SJ radar.
13.
Sonar sweeps and fathometer traces located the barge with its deadly gas near Baton Rouge, Louisiana on 17 September.
14.
The remainder of her patrol, along the Borneo coast through shallow and treacherous waters, was hampered by fathometer failures.
15.
Without an operational fathometer, " Triton " could be vulnerable to grounding or collision with uncharted submerged formations.
16.
On 12 March, the trouble-plagued fathometer ceased operation when its transducer header flooded, grounding out the entire system.
17.
Single-beam echosounders and fathometers began to enter service in the 1930s which used sonar to measure the depth beneath a vessel.
18.
During her yard period, she received a fathometer, a new distilling unit, and more up-to-date radar equipment.
19.
Following the submarine's arrival in the Aleutians on 21 March, air compressor failure and malfunctioning of her fathometer delayed her departure until 13 April.
20.
Then the Echo slowed and came to periscope depth and went active on his fathometer on a short scale which was not suitable for the depth of water.
