Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    Name or NavList Code:
    Email:
       
    Reply
    Re: Underwater bells as navigation aids
    From: Frank Reed
    Date: 2024 May 8, 10:30 -0700

    Interesting... 1907, huh? I wonder what era had the highest number of "underwater bell" sounds? Could it have been as long ago as the Second World War? The name changed, and I'm thinking of sonar "pings", but it's the same idea...

    "One ping only, Vasily", said the Lithuanian-Soviet submarine commander with the Scottish accent.

    Of course, you have to be careful with active sonar. It's deadly! Hell's bells.

    Frank Reed

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

    Enter the email address associated with your NavList messages. Your NavList code will be emailed to you immediately.
    Email:

    Email Settings

    NavList ID Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site