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Updated 2018 - Emergency Equipment to assist Search & Rescue

Discussion in 'Training, Practices & Equipment' started by IyaDiver, Sep 8, 2018.

  1. Greenjuice

    Greenjuice Contributor

    This should to be balanced against the very many stories shared amongst dive guides in Indonesia who claim that there are many more examples of lost divers that do not make it into the international press.

    I remain sceptical of such stories as it is easy for rumours to gain a mythological status over time. However, I would be interested to hear comments from past or present industry professionals in the region if they believe it is true that there are many more examples of lost divers that do not have widespread news coverage.
  2. Dan

    Dan ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 500 - 999
    Location: Lake Jackson, Texas
    I have been thinking the same for my plan to go to Banda Sea on Ring of Fire trip with Blue Manta in less than 3 months, Ring of Fire September 9-19, 2019 and came to the conclusion of carrying PLB1 in waterproof canister and Nautilus Marine Rescue GPS, that I plan to test it's signal with the boat AIS system during check out dive. They both are small enough to fit in my BCD pocket.

    Also, I'll be on Amira in January 2020. Raja Ampat 14-25 Jan 2020 with Amira $837 off I was told that they carry: ENOS-System | The Specialist in Safety and Rescue Equipment

    There are more discussions on this subject here: Best signaling devices from the searcher’s point of view - update
  3. seaseadee

    seaseadee Contributor

    # of Dives: 100 - 199
    Location: Boca Raton, Florida, United States
    @Dan I'm headed to Indonesia in Feb.
    • I already have a nautilus lifeline (properly registered here in the US). Do I need a different one?
    • You have listed both the PLB1 and the Nautilus. Did you carry both? Do you need both?
  4. Dan

    Dan ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 500 - 999
    Location: Lake Jackson, Texas
    Your registered Nautilus Lifeline (old model with VHF radio) is good to have. You may test the radio communication with the captain and check if his boat has DSC capability and at what channel he’ll be talking to you in.

    Yes I carry both. I feel better to have both.
    seaseadee likes this.
  5. Dan

    Dan ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 500 - 999
    Location: Lake Jackson, Texas
    Here is my post about the Nautilus Marine Rescue GPS & PLB1 pre testing prior to liveaboard trip to Banda Sea, Indonesia.

    Real Time Blue Manta Review: Banda Sea 9 – 19 Sept 2019

  6. Kevrumbo

    Kevrumbo Banned

    # of Dives: 1,000 - 2,499
    Location: South Santa Monica Bay/Los Angeles California, USA
    This is an example of a common scenario that will test the experience of your skiff driver to find and pick you up before deteriorating into a worst case lost-at-sea situation; Surfacing post-drift dive into a momentary tropical rain squall in near zero visibility:

    Currently by itself, a Nautilus Lifeline GPS will not work in all lost-at-sea scenarios alone by itself; you will need as backup an additional 406Mhz PLB (Personal Locator Beacon, transmitting straight to satellite).

    DSC (Digital Selective Calling) is a two way digital paging function and it is not necessarily the exclusive domain of distress alerts within the GMDSS (Global Maritime Distress Safety System) framework. For instance you can use it for station to station communication via HF or VHF frequency radio. The only way a AIS (Automatic Identification System) PLB with VHF DSC functionality could be regarded as GMDSS compliant is if it was DSC acknowledgment capable, and even then that compliance may be debatable as position may only be just AIS limited capability with a 5km range at best (depending on rain & swell height conditions). Combined functionality AIS/406Mhz PLB devices to be developed, manufactured and hopefully available sometime in the near future may change that.

    The correct way (at least imho) to use DSC is to first send a mmsi (Maritime Mobile Service Identity) call to the mothership let's say repeatedly for maybe 5 minutes. if the call doesn't get acknowledged then escalate to an All Ships call hoping some good samaritan on a nearby boat is more keen to haul your sorry ass out of the water than the "mates" on the mothership, who clearly lost track and are out of VHF reception range of where you drifted off to. At the same time as the initial DSC call, the AIS MOB (Man Overboard) call goes out as well. If none of this works - let's say 10 minutes or so - a 406Mhz PLB call should go out to alert the overhead cospas/sarsat satellite system as the last resort for rescue, as clearly no local boats are going to save your ass, because they are out of range or worst case don't have even have a VHF radio at all to receive your distress signal.

    Ideally such a combined AIS MOB/406Mhz PLB unit would be user programmable so you can tailor the operation to suit the kind of off-shipping lanes sailing or remote area Scuba diving you do, because otherwise a unit with only one fixed mode -such as the current Nautilus Lifeline AIS GPS VHF product- will not cover all the various kind of lost-at-sea sailing/scuba scenarios one can think of.

    The last best possible hope of Rescue with current technology is always a separate 406Mhz PLB straight to satellite, over a line-of-sight limited Nautilus Lifeline VHF product.

    Jay likes this.
  7. Diver below 83

    Diver below 83 Regular of the Pub

    # of Dives: I'm a Fish!
    Location: SoFlo
    I’m looking to carry a plb1 and lifeline as well
  8. Dan

    Dan ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 500 - 999
    Location: Lake Jackson, Texas
    I got your message. That’s why I have both Nautilus & PLB1. The New Nautilus is small enough to carry & both fit nicely in one of my BCD pockets. In the other BCD pocket I have DSMB & reel.

    EE3AD2AD-815D-4FC3-BC22-4293B9015E33.jpeg EA6BA0FB-C7A5-4F60-8751-29CDAF9357FC.jpeg
    Jay and Johnoly like this.

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