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  • Originally posted by spider View Post
    No expert by any means but my guess is something along the lines of SD Northern River or SD Victoria;

    https://en.m.wikipedia.org/wiki/SD_Northern_River

    https://en.m.wikipedia.org/wiki/SD_Victoria

    Can deploy manned and unmanned submersibles...the new RN crewed vessel will require ISTAR capabilities.
    Most Navies use auxiliary craft for specialist duties in support of trials including deployment of large UV's or UAV's. Support type vessels with heavy cranage or launching systems won't be crewed with minimal crews or first trippers. Modern ships civil/military are absolutely festooned with triple of more suites of ISTAR type equipment. Most new Fishing craft (see this weeks Irish Skipper) have more sonar and UW scanners than most minehunters. There is a new Lerwick FV, captained by two young men in the Skipper magazine and the electronics take up 12 column inches. There is a similar vessel to be based in Skerries Ireland. FV Ocean Challenge.
    Last edited by ancientmariner; 9 May 2021, 09:15.

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    • Originally posted by ancientmariner View Post

      Most Navies use auxiliary craft for specialist duties in support of trials including deployment of large UV's or UAV's. Support type vessels with heavy cranage or launching systems won't be crewed with minimal crews or first trippers. Modern ships civil/military are absolutely festooned with triple of more suites of ISTAR type equipment. Most new Fishing craft (see this weeks Irish Skipper) have more sonar and UW scanners than most minehunters. There is a new Lerwick FV, captained by two young men in the Skipper magazine and the electronics take up 12 column inches. There is a similar vessel to be based in Skerries Ireland. FV Ocean Challenge.
      I wasn't thinking about commercially available sonar or UW scanners but about the more sensitive stuff alluded to by CTU @#3069.

      If this was just a case of employing vessels with commercially available sonar then there would be no point in deploying a Naval vessel on this task.

      Fishing vessels / commercial ships can't identify and track submarines.

      Both the vessels operated by have core crews of 14-16 pax with accommodation for more, mission-dependent.
      'History is a vast early warning system'. Norman Cousins

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      • Originally posted by ancientmariner View Post

        Most Navies use auxiliary craft for specialist duties in support of trials including deployment of large UV's or UAV's. Support type vessels with heavy cranage or launching systems won't be crewed with minimal crews or first trippers. Modern ships civil/military are absolutely festooned with triple of more suites of ISTAR type equipment. Most new Fishing craft (see this weeks Irish Skipper) have more sonar and UW scanners than most minehunters. There is a new Lerwick FV, captained by two young men in the Skipper magazine and the electronics take up 12 column inches. There is a similar vessel to be based in Skerries Ireland. FV Ocean Challenge.
        We should maximise the electronic and control management systems on our new ship. In addition to AIS it is possible to also get bearing and heading information from GPS via up to 5 satellites. The Furuno SC-120 can provide useable heading information to 0.5 degree accuracy by using aerials 33.9 inches apart. There is an SC-70 with aerials 22.5inches apart but accuracy drops to 0.8 degrees. These would be as well as Magnetic and Gyro compasses but builds in triple and more redundancy. All systems can provide selectable data to ships operational equipment.

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        • OSCE working in Ukraine have reported they are consistently being subjected to GPS Jamming.
          Given the global reach of the main aggressor there, and their influence worldwide in conflicts we are likely to be involved in, in future Overseas Peacekeeping operations, it's time to move away from reliance on GPS for navigation.
          It has become the modern version of removing all road signs.

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          • Originally posted by na grohmiti View Post
            OSCE working in Ukraine have reported they are consistently being subjected to GPS Jamming.
            Given the global reach of the main aggressor there, and their influence worldwide in conflicts we are likely to be involved in, in future Overseas Peacekeeping operations, it's time to move away from reliance on GPS for navigation.
            It has become the modern version of removing all road signs.
            Given the need for ships to proceed to sea on commercial and military undertakings there is no question that ANY method of Navigation and tracking must be reliable with redundancies built in. You can start by telling your equipment suppliers that their system MUST have inbuilt anti-jamming and anti-spoofing features. Try not to have oddball components or equipment in your outfit like Chinese phones. Globally countries must maintain some land based signals as a check on Satellite signal using the DGPS system. Most of the problems are occurring in Putin and PING lands so don't rely on GLONASS or BeiDou. The GLA are talking about closing down DGPS signals from Lighthouses. They should be stopped for now. I have mentioned that we should try out Inertial Navigation systems and maintain a competence in the Sextant and the Chronometer. Our ancestors discovered the World and there were never any road signs then or NOW.

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