Re: JS/Delaware & Martha Jane as power boats What about the ballast?
Thanks for your response Bruce. Do you think Delaware would need to
be ballasted like Jochems is be "on her lines"?
Don
be ballasted like Jochems is be "on her lines"?
Don
--- Inbolger@yahoogroups.com, "Bruce Hallman" <bruce@...> wrote:
>
> Judging from what I have observed from looking at many Bolger designs,
> the Tennessee has very little rocker, and I think it is intended for
> more flat inland waters. For coastal cruising I think that Bolger
> tends to have the boats with more rocker, that is, with more depth
> creating buoyancy underwater at midships, and with less depth (and/or
> width) at both ends decreasing the buoyancy in the ends.
>
Somewhere along the line, I recall reading something PCB wrote about
rocker in his sailing sharpies to the effect that it provides a clean
entry to waves when heeled over. This was in the context of sea-keeping
abilities of flat bottomed boats. It was probably in the write-up for
Black Skimmer or Blackgauntlet II.
V/R
Chris
Bruce Hallman wrote:
rocker in his sailing sharpies to the effect that it provides a clean
entry to waves when heeled over. This was in the context of sea-keeping
abilities of flat bottomed boats. It was probably in the write-up for
Black Skimmer or Blackgauntlet II.
V/R
Chris
Bruce Hallman wrote:
> Judging from what I have observed from looking at many Bolger designs,
> the Tennessee has very little rocker, and I think it is intended for
> more flat inland waters. For coastal cruising I think that Bolger
> tends to have the boats with more rocker, that is, with more depth
> creating buoyancy underwater at midships, and with less depth (and/or
> width) at both ends decreasing the buoyancy in the ends.
>
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Judging from what I have observed from looking at many Bolger designs,
the Tennessee has very little rocker, and I think it is intended for
more flat inland waters. For coastal cruising I think that Bolger
tends to have the boats with more rocker, that is, with more depth
creating buoyancy underwater at midships, and with less depth (and/or
width) at both ends decreasing the buoyancy in the ends.
the Tennessee has very little rocker, and I think it is intended for
more flat inland waters. For coastal cruising I think that Bolger
tends to have the boats with more rocker, that is, with more depth
creating buoyancy underwater at midships, and with less depth (and/or
width) at both ends decreasing the buoyancy in the ends.
I find myself wondering if a Tennesee, perhaps with beefier
scantlings, might not be a better choice than the sailboats, w/o
sails, both in speed and ride as a medium range coastal cruiser.
PB&F touted the Delaware cartoon as Jochems Schooner w/o the sail rig
and modified cabin to make it an outboard powered medium range
cruiser. I've seen on You Tube, a Martha Jane (with the cabin and the
sponsons) without the sail rig utilizing just an outboard.
Both are interesting displacement hull boats, but I wonder if they
carry the water ballast of their sailboat cousins? And, as a power
boat, w/o the ballast, how are these boats going to ride? Will there
be enough boat in the water for decent handling?
Also, both boats had solid ballast, lead, added to the plans after a
few were built. In the case of MJ, the changes were extensive, IE the
sponsons AND the cabin to prevent the boat from capsizing in a
knockdown. With no ballast, even though sans the masts, how stable
will either boat be?
scantlings, might not be a better choice than the sailboats, w/o
sails, both in speed and ride as a medium range coastal cruiser.
PB&F touted the Delaware cartoon as Jochems Schooner w/o the sail rig
and modified cabin to make it an outboard powered medium range
cruiser. I've seen on You Tube, a Martha Jane (with the cabin and the
sponsons) without the sail rig utilizing just an outboard.
Both are interesting displacement hull boats, but I wonder if they
carry the water ballast of their sailboat cousins? And, as a power
boat, w/o the ballast, how are these boats going to ride? Will there
be enough boat in the water for decent handling?
Also, both boats had solid ballast, lead, added to the plans after a
few were built. In the case of MJ, the changes were extensive, IE the
sponsons AND the cabin to prevent the boat from capsizing in a
knockdown. With no ballast, even though sans the masts, how stable
will either boat be?