• Welcome to ScubaBoard

  1. Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.

    Benefits of registering include

    • Ability to post and comment on topics and discussions.
    • A Free photo gallery to share your dive photos with the world.
    • You can make this box go away

    Joining is quick and easy. Login or Register now by clicking on the button

Major Environmental Issue: LFA Sonar

Discussion in 'Basic Scuba Discussions' started by GSmith, Jul 28, 2003.

  1. GSmith

    GSmith Angel Fish

    Please pass this information along as you see fit. The following is an article featured in UK's Dive Magazine August 2003 edition:

    By John Nightingale

    LAST YEAR the Bush administration gave the US Navy permission to deploy its Low Frequency Active (LFA) sonar system over 75 per cent of the world's oceans, despite a mass of evidence indicating that it can injure marine mammals. At close range, LFA sonar can destroy a whale's eardrums, cause its lungs to haemorrhage and even kill it. At a test two years ago in the Bahamas it caused mass strandings of four different species, all showing haemorrhaging
    around the eyes and ears, indicating severe acoustic trauma. During tests, a scuba diver was exposed to 14 minutes of LFA noise at 160 decibels (the sound level 100 miles away from the source!), and experienced uncontrollable shaking in his limbs before going into a seizure that recurred for days afterwards. The National Resources Defense Council in the US successfully got a temporary injunction to stop the LFA activity, the judge agreeing that the science clearly demonstrates 'the possibility, indeed probability, of irreparable injury to marine animals'. The Navy is still determined to deploy it. Tell George W. Bush that the oceans and its contents are not his to destroy, email president@whitehouse.gov.

    Checkout The National Resource Defense Council's web site for more information on this subject at ~ http://www.nrdc.org/wildlife/marine/nlfa.asp
  2. diverbrian

    diverbrian Instructor, Scuba

    # of Dives: 200 - 499
    Location: Sanford, Michigan
    Could you please do a search on LFA sonar? We already have about two threads running on it. The debate was getting into politics which can get rather heated. :)

    You could check those out for the responses on the board then so that people don't feel the need to repeat themselves and rile each other up again. My own views are even in one of those threads as are a couple of our resident researchers and political analysts. :)

    It may be better to continue those than to get the topic going yet again. And we may all learn more when those threads are "pushed up" from having been read and posted to recently.
  3. navy85

    navy85 Nassau Grouper

    Naval Sonars

    ...and you might want to check some of the NRDC "facts"...LFA has not been used or tested since April 1998.
  4. 100days-a-year

    100days-a-year Solo Diver

    # of Dives: 5,000 - ∞
    Location: NE Florida
    Why confuse them with facts ,the title alone is a declarative statement not a question.Try snopes or about .com for links to both sides of the story.I would be one of those "heated " individuals.
  5. Knavey

    Knavey ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 200 - 499
    Location: Tampa Florida USA
    Quit feeding the 1 post troll...
  6. GSmith

    GSmith Angel Fish

    Doing a search for LFA on the forums, I realized that this there are two other previous threads on the subject. The original one posted on 6/10/03.
    I appreciate the added information from all. My pessimism had be tempered by the additional information provided.

    Reference these two previous forum links were the topic has been covered at length:



    Thanks again to all...

Share This Page