FPB 78-1 Cochise: Preliminary Wave Analysis

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A quick couple of photos of Cochise at cruise, taken from FPB 64-11 (both FPBs are undergoing sea trials).

The first photo is at 2/3rds payload doing 10.7 knots.

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Second photo shows Cochise at 13.25 knots. No surprises so far.

Posted by Steve Dashew  (July 2, 2016)

9 Responses to “FPB 78-1 Cochise: Preliminary Wave Analysis”

  1. sean bryant Says:

    I’m guessing a Top speed of 14.7Knts

    Awesome work, Awesome ‘small ship’ a name what seems fitting for vessel of this calibre!

  2. Pam Wall Says:

    Looking really good and going along slicing through the water with no care in the world!

  3. Pam Wall Says:

    CCA Burgee flying proudly!!!

  4. Henry Says:


    Looking at the second photo at the higher speed, the boat seems to trim down at the stern a touch. Is this because of dynamic lift? Or other reasons?


  5. Steve Dashew Says:

    Hello Henry:
    The trim and speed equation is complex. Ideally there us little or no aft trim. But to accomplish this requires more surface area aft which makes for a harder ride and less heavy weather capability.

  6. Henry Says:


    And the stern wake disturbance certainly is greater as the stern digs in at the higher speed.

    I don’t think I could ever design anything – the trade offs would drive me nuts. 🙂

  7. Steve Dashew Says:

    Yes Henry, the tradeoffs drive us nuts too.

  8. Cedric Says:

    What is the apparatus on the aft end of the aft deck cover/solar array? Is it a TV antenna?

  9. Steve Dashew Says:

    Hi Cedric
    That large aft antenna is for the Iridium Pilot Satcom.