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2. Electrofishing - Wikipedia

   en.wikipedia.org/wiki/Electrofishing

   Electrofishing by boat. There are three types of electrofishers: backpack models, tote barge models, and boat mounted models, sometimes called a stunboat. [2] Backpack electrofisher generators are either battery or gasoline powered. They employ a transformer to pulse the current before it is delivered into the water.

3. Bridge navigational watch alarm system - Wikipedia

   en.wikipedia.org/wiki/Bridge_navigational_watch...

   Stage 2: When a confirmation signal fails to occur within 15 seconds in Stage 1, an alarm will sound on the bridge, and if there is still no confirmation signal after a further 15 seconds, in the captain's and the first officer's cabins. [2] One of them must then go to the bridge and cancel the alarm.

4. Fishfinder - Wikipedia

   en.wikipedia.org/wiki/Fishfinder

   A modern fishfinder displays measurements of reflected sound on a graphical display, allowing an operator to interpret information to locate schools of fish, underwater debris and snags, and the bottom of a body of water. Fishfinder instruments are used both by recreational and commercial fishermen, as well as by marine biologists.

5. Electric boat - Wikipedia

   en.wikipedia.org/wiki/Electric_boat

   An electric boat is a powered watercraft driven by electric motors, which are powered by either on-board battery packs, solar panels or generators. [ 1 ] While a significant majority of water vessels are powered by diesel engines , with sail power and gasoline engines also popular, boats powered by electricity have been used for over 120 years.

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Acoustic release - Wikipedia

   en.wikipedia.org/wiki/Acoustic_release

   Deployment phase: The instrument package is dropped to the sea floor. The principal components of the package are the anchor weight which allows the assembly to sink and then remain firmly on the sea floor, the acoustic release device which can receive a remote commands from the control station to drop the anchor weight, the instrument or payload which is to be deployed and later recovered ...