FPB 64 Lucky Day At Circa


It is the eleventh day of the eleventh month in the year 2011, and we have a new batch of photos from Circa, a few of which we’ll share. That’s Avatar, FPB64-1 in the yard, back at her birth spot for a get home auxiliary to be installed. After two years of cruising and many thousands of miles she is looking good. FPB 64-3, Iron Lady, is in the area as well. And then there are FPB 64s five, six, and seven, under construction, which we shall get to shortly.


Last week we posted some data on Avatar‘s fuel burn for the trip south in less than ideal conditions. Having looked at bottom and propeller phoyos, sporting a season of growth, her drags were probably up by five to ten percent a prop efficiency down by at least the same. There are two ways to look at this: it is real world and one should allow for a foul bottom when thinking about range, or with a clean underbody and prop, range would be substantially higher and fuel burn lower.


Metal work on FPB 64-5 is almost completed. You are looking here a the aft deck lockers. The larger of the two hatches is below the dinghy and therefor blocked if the dink is board. The smaller hatch is clear of the stored dinghy and gives you access to much of the adjacent space.


The systems and interior are coming along smartly.


This is the sump at the forward part of the engine room. The large strainer is connected to the damage control pump.

There are three reed float switches shown. The two centered run the twin bilge pumps. There is a third top center and somewhat further off the hull plate for a high water alarm.


Switching now to FPB 64-6. Note the sharp trailing edge of the skeg ahead of the prop. This reduces the turbulent flow from the skeg into the prop, a major gain in efficiency.


Still on FPB 64-6, the forward bath module being lowered into the great room.


And the stabilizer mechanism coffer dam, with its watertight lid open. Note the reinforcements around the mechanism carrier flange.


Finally, the prefab parts for FPB 64-7 which will shortly begin to form a recognizable shape.

Posted by Steve Dashew  (November 12, 2011)

3 Responses to “FPB 64 Lucky Day At Circa”

  1. Bill Kelly Says:

    Just love this engineering porn, Steve. What a dream job to work for Circa and see these magnificent vessels take shape. Keep em coming.

  2. sarah-sarah Says:


    I’m sure you noticed after you posted this, FPB64-2 is SARAH-SARAH not IRON LADY.

    SARAH-SARAH is presently in Anacortes, Washington, USA. She will be taking her solstice cruise in mid December in south Puget Sound. Not exciting, but she is being well used. Hopefully you’ve viewed Brian’s “Jellyfish of the Northwest” filmed this fall near Buchart Gardens in British Columbia, Canada.

  3. Steve Dashew Says:

    Howdy Bill:
    That was a test, to see if anyone was reading… Corrected now.