Tag: lost at sea

  • A missing sub and navigation: What happened to the sub searching for the Titanic?

    A missing sub and navigation: What happened to the sub searching for the Titanic?

    OceanGate. (Credit: Screenshot of NBC news coverage)
    OceanGate. (Credit: Screenshot of NBC news coverage)

    On June 17, an OceanGate Expedition Titan submersible launched off the coast of Newfoundland, Canada, carrying five passengers to the bottom of the Atlantic Ocean to explore the infamous R.M.S. Titanic shipwreck. The U.S. Coast Guard said that the submersible lost contact with the surface vessel about an hour and 45 minutes after the launch and has not been in contact since.

    The submersible can support life for 96 hours. As of the afternoon of June 20, it had 40 hours of oxygen left and U.S. and Canadian agencies were still searching for it.

    The Titan submersible explained

    According to the OceanGate website, the Titan is “a Cyclops-class manned submersible designed to take five people to depths of 4,000 [m] (13,123 [ft]) for site survey and inspection, research and data collection, film and media production, and deep-sea testing of hardware and software.” The Titan is equipped with an inertial navigation system (INS), an ultra-short base line acoustic positioning system, a robotics laser scanner, a Teledyne 2D sonar and more.

    While it is equipped with an INS, the Titan relies on messages from a surface ship to guide the submersible to the shipwreck. The submersible and surface vessel rely on Elon Musk’s Starlink satellites for communication.

    A part of the Titan worth mentioning, the crew is sealed inside and bolts are applied to the outside — needing an external crew to remove them upon surfacing.

    Foreshadowing

    The New York Post reported, in 2022, that an OceanGate Expedition to the Titanic lost contact for more than two hours and never found the wreck.

    Aboard the submersible was a CBS correspondent, David Pogue, who was filming a segment for CBS Sunday Morning. He tweeted about the incident.

    The future

    There are 18 planned expeditions to the Titanic with OcenGate Expeditions to survey the shipwreck, collect data, and document high-resolution images and videos.

    The entire trip to the Titanic wreck site takes 8 days, and one dive can take up to 10 hours. The expedition is comprised of five legs.

  • World-renowned PNT expert David Last presumed lost at sea

    World-renowned PNT expert David Last presumed lost at sea

    UPDATE: The search was called off on Tuesday afternoon. Additional information is available in this Evening Standard article.


    David Last (Photo: @harriethallphoto via Dana Goward)
    David Last (Photo: @harriethallphoto via Dana Goward)

    Just before 13:00 GMT on Nov. 25, a private plane piloted by David Last, former president of the Royal Institute of Navigation, disappeared from radar and hit the sea approximately two miles off the coast of Wales.

    On-going search and rescue efforts have recovered pieces of wreckage and personal effects.

    “Last was one of the most respected and well-loved figures in the worldwide positioning, navigation, and timing community. His loss creates a hole that cannot be filled,” said Dana Goward, president of the Resilient Navigation and Timing Foundation. “David was a close personal friend. Our grieving will not be brief.”

    According to BBC News, the search for the missing plane and its pilot off the Welsh coast resumed on Nov. 26. North Wales Police said the light aircraft was flying from Caernarfon Airport to the Great Orme, Llandudno, and back on Monday when it disappeared. There were no other passengers and officers were supporting the missing pilot’s family.

    The Maritime and Coastguard Agency said the search has resumed around Puffin Island, near Penmon, Anglesey. A plane carrying a sonar technology camera is searching the area as well as a lifeboat, helicopter and coastguard teams on foot.

    David Last was a U.K. consultant engineer specializing in radio navigation and communications systems, professor emeritus at the University of Bangor, Wales, and past president of the Royal Institute of Navigation.

    He also was a member of the expert panel and co-author of the January 2018 Blackett Report.