FPB 97-1 Sea Trials Day 2: A Wicked Wake

FPB971 day 2 sea trial 200

You are looking at what drives the FPB team, what our client (and we) have been waiting to see after 2.5 years of intense effort. A lovely clean flow release off the stern with minimal magnitude indicating a highly efficient cruising machine (this at 13.1 knots GPS averaged in two directions). A wicked wake indeed.

Compare today’s wake to yesterday’s at 12 knots. This one is obviously further aft, and starting to flatten out. Yet the FPB 97 is moving at a speed length ratio of only 1.27, i.e what is considered displacement speed. This is an indicator of an interesting future when we are allowed to go to wide open throttle on the engines. In case you are new to the scene, this 110-foot yacht is being propelled by a pair of 235HP John Deere 6068 SFM 50s.

FPB971 day 2 sea trial 200 3

Where we go from here with Iceberg‘s sea trials has to remain confidential for the time being, until we have fully digested and vetted the next range of data. Yachting is so full of illusory claims that we want absolute clarity and proof when we let the world at large know just how wicked this FPB 97 really is. (For those of you who have entered our performance estimate contest, it will be a little while yet before we can announce a winner.)

FPB 97 Solar array200

Sea trials include testing systems at length, and the power for this is mainly being supplied by the solar array, a total of 20 of these high output panels. This array is capable of delivering over 6000 watts of power, and is doing such a good job that the batteries are staying topped up without difficulty.

FPB 97 vent system200

The passive vent system, large inlets in the forward side of the Matrix deck coaming and under the great room roof overhang, are doing their job of keeping the interior cool.

FPB 971 Disco Bay Greenland200

Speaking of icebergs, it will be a while before the first FPB 97 gets to visit big ice, so we transported her to Greenland’s Disco Bay. If you would like to enjoy Greenland’s charms click here for a short video taken aboard the FPB prototype Wind Horse a few years back.

We should add that all of this is being closely monitored by FPB 78 owners. The FPB 78 is the next step in hydrostatic logic  and systems.

For a review of the FPB design concept click here.

A complete recap of all FPB 97 posts is here.

An introduction to the FPB 97 is here.

Posted by Steve Dashew  (November 25, 2014)

7 Responses to “FPB 97-1 Sea Trials Day 2: A Wicked Wake”

  1. Raj Narayan Says:

    The wake looks like the outline of a whale’s tail.

  2. John Rushworth Says:

    Funny, I just said exactly that on Facebook!

  3. Shannon Says:

    You transported her to Greenland!? Wow!! I knew there was technology in that thing you weren’t telling us about. She looks right at home next to the ice. I hope the new owners plan to really take her up there.

  4. Scott Evangelista Says:

    I assume you won’t declare winner until final trials are down with ship in crusing trim:). Bit more efficient when that bow comes down! Really beautiful to watch her in the water and can hardly wait for her middle sister to burst on the scene!,

  5. Steve Dashew Says:

    Hi Scott:
    For her current displacement a bit stern down and bow up is actually very efficient. Prop immersion and thrust vectors benefit and the longitudinal volume distribution is within optimum needed paraemters.

  6. Matt L Says:

    Just how wicked is the FPB 97….the world wonders….

  7. Scotto Says:

    More… Give. Me more…please!