Jump to Navigation
Home

Electronic depth sounder

Electronic device for measuring water depth by bouncing a sound wave off the bottom and measuring how long it takes between transmission and reception of its reflection.

Main menu

  • Home
  • Special Features
  • Learn About
  • Browse Collection
  • About
  • Search

Main menu

  • Home
  • Special Features
    • Glossary
    • Journal of Edwin Mitchell
    • The Journal of Margaret Oakes
  • Learn About
    • Maritime Communities
    • Our Maine Ancestors
    • Fisheries
    • Working The Bay
    • History of Navigation
    • Ships & Shipbuilding
    • Maine and the Asian Trade
    • Life at Sea
    • Marine Art
    • The Searsport Captains
    • Women’s Roles
  • Browse Collection
  • About
    • About The Museum
    • About The Site
    • Contact
  • Search

Search form

» Advanced Search Options

 

  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
  • N
  • O
  • P
  • Q
  • R
  • S
  • T
  • U
  • V
  • W
  • Y
  • Z

  ©Penobscot Marine Museum 2012