• Short Summary

    A look at how water depth is measured via lead and echo soundings to prevent ships running aground.

  • Description

    Item title reads - Invisible roadways of the sea.

    L/S of observation towers along the coastline of America. M/S of people standing on them and looking through binoculars. M/S of a lighthouse. M/S of men carrying out water surveys on the beach. M/S of a small boat making lead soundings in shallower waters. M/S of a boat in Alaska carrying out echo soundings in deep water. M/S of a diagram showing how the echo soundings work to measure the depth via an oscillator and fathometer. Various good shots of a ship grounded near rocks.

  • Tags

  • Data

    Film ID:
    1126.10
    Media URN:
    39201
    Group:
    Pathetones
    Archive:
    British Pathé
    Issue Date:
    02/12/1935
    Sound:
    Sound
    HD Format:
    Available on request
    Stock:
    Black & White
    Duration:
    00:01:54:00
    Time in/Out:
    01:18:18:00 / 01:20:12:00
    Canister:
    PT 297

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