"Wayne.B" wrote in message
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On Tue, 25 Jun 2013 05:29:58 -0400, "Eisboch" wrote:

Do you have any guess what the cruise speed would be on the Cummins
powered twin? The listing shows no performance specs.
I will call them obviously, but I'd like to have a rough idea before
going to check it out.

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That's a lot of power for a 36. If you run the engines hard it might
get up on plane and do something in the mid-teens, albeit with a lot
of commotion, and a fuel burn in the 15 to 20 gph range. The boat,
fuel burn and engines will be a lot happier running at displacement
speeds well under 10 kts.

There are two big advantages to twins as you probably know:
Maneuverability at slow speed; and "get home" redundancy. The
redundancy is nice but for coastal cruising somewhat over rated.
Offshore in the boondocks? Priceless.

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Thanks. That's consistent with the reports of owners with that engine
setup that Jim posted.
I think that the GBs have a modified "V" hull but I don't think it's a
true planning hull. Takes a lot of power and fuel to get them up on a
plane.

I remember going down the ICW in South Carolina on the Navigator. I
was just putt-putting along at idle because we were coming up on a
congested area with a bunch of people fishing in small boats in the
middle of the channel. I had to weave my way through all the small
boats, many of which were anchored in the middle of the channel. Some
of them were glaring at me, a few giving me the finger. What the
hell? They were fishing in the middle of the ICW and I was going as
slow as my boat would go.

The ICW took a sharp turn to the left just beyond where all the
fishing boats were. All of a sudden I heard a horn, turned around to
see who it was and a Grand Banks was coming up fast on our port side.
He was on a plane and making time. I forget what size it was but he
was moving. The guy in the GB tried to cut the corner too far over
to the left of the channel to avoid the small boats. He ran aground.
Guys in the fishing boats were laughing their asses off and cheering.

That's the area where I had my first grounding also. After making the
turn and leaving the congested area that I had slowly picked my way
through, the ICW opened up a bit. was straight and no fishing boats.
I got the Navigator back up on plane, relaxing a little bit after
getting through the mess of boats. Then we came up on a what appeared
to be a "fork in the road". There was a single small fishing boat
right at the fork and he looked like he was either waving at us or
giving me the finger. I was focusing on him as I started throttling
back and didn't notice that my chart plotter indicated the ICW went
off to the right. I kept going straight and didn't notice the
channel marker.

Fortunately I had backed down quite a bit and it was a soft grounding
that I easily backed off of. Turns out the guy in the fishing boat
was waving to point us in the right direction of the ICW. Felt a
little foolish, but no damage done.