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Some prominent new features include two scrambler systems built in
Multiple Start Sequence options - ISAF 5
which ensures secure
Note that CHIRP Mix and Match cables cannot be used with conventional 50/200kHz transducers
Halyard Shackles have a lever action for easy opening and closing
Davis Mark 3 Marine Sextant Boat Sonar Some prominent new features includeMark 3 Marine Sextant Sometimes referred to as a "lifeboat" sextant, the Mark 3 is an inexpensive training sextant. Yet this model has taken sailors around the world, too! It is full sized and has sunshades, but no optical magnification to help you find dim celestial bodies. Comes with instruction booklet.