The monitor serves as a way for the commanding officer and other officers stationed at the periscopes to immediately double-check for the presence of other vessels in the area.
The admirals said that in a drill in local waters, it would be common to raise the periscope at least 4 to 6 feet above the sea level.
A Texas oilman who was aboard the submarine Greeneville said yesterday that its officers made six sweeps with the periscope at two slightly different depths but saw no other ships less than 10 minutes before it surfaced and slammed into a Japanese fishing trawler.
The live-streaming app, which is uncannily similar to Periscope, went viral at the same time the Periscope team was prepping its final beta, seeding it with friends and friends of friends and Tyra Banks for some reason.
Waddle then looked through the periscope at the area where sonar had previously reported surface contacts.
Commander Chun added that it was common for the Navy to seat visitors at various controls -- like the periscope, the ballast control and the helm -- in demonstration cruises like the one that ended with the sinking of the fishing vessel.
While answering user questions he also hinted at some upcoming features that the Periscope team had been working on.
While answering user questions he also hinted at some upcoming features that the Periscope team had been working on. .
He was instrumental in the adoption of the periscope rifle at Gallipoli, a device which he saw during an inspection of the front line.
At periscope depth, the OOW calls 'breaking' and conducts two sweeps with the periscope to check that the submarine is clear from potential collision with contacts, and then will range the contacts manually to update the submarine maritime command system (SMCS) operators.
