Re: [bolger] Re: Grant's Tomb (I mean Keel:-)-Marina Cruiser

"Merlin" (Marina Cruiser) won't be soaking up much if any water as she's strip-plank built and fully epoxy saturated. Yes she is a burdensome "Little", boat. In certain conditions she does roll a bit, but not in a bad or unduly unbearable way. My father is thinking of installing a mizzen mast for a steadying sail ala traditional Maine Lobsterboats etc. We found with "Beluga" (30' Bolger "Romp" design) that she'd sail reasonably well in certain conditions under just the mizzen alone due to her long straight keel.(I think my father built her with 1" more depth to the keel)- running and reaching in calm water. So hopefully a mizzen steadying sail on Merlin will give her a bit of a boost!! ??

Hugo Tyson, Launceston, Tasmania, Australia.

Peter Lenihan <lestat@...> wrote:
--- Inbolger@yahoogroups.com, Hugo Tyson <hhetyson@y...> wrote:
> She has no internal or external ballast except the engine.> Hugo
Tyson. Launceston, TASMANIA, Australia.


Hugo,
Your father did a first class job building MERLIN(Marina Crusier)
and I'm sure she is a joy for all who use her.However,she is a heavy
boat for her length(when was the last time you saw a modern
21'fiberglass powerboat that weighed 2 1/2 tons?). A big chunk of
that weight comes from the backbone structure with its hardwood
keel,skeg and deadwood,
sided 5", and heavy floors,sided 2 1/2", throughout.Her construction
is similar to traditonal New England catboats which used massive
timbers in their keel,skeg and deadwood,both for strength
and"ballast".Over time,this "ballast" became even more meaningful as
it soaked up hundreds of pounds of water.
I suspect that a goodly part of MERLINs excellent manners and
aplomb in waves comes from the substantial mass of her structure and
this allows her to get away without the use of any additional"iron"
ballast,per se.
For Grant to retain a bit of that effect in his conversion
project,he really should keep that ballast,especially since we are
talking about a relatively light hull structure with low inertia.

Thanks for posting all those wonderful pictures!

Sincerely,

Peter Lenihan,preparing for another deep freeze,predicted to be even
colder then last weeks,from along the shores of the damned near
frozen over St.Lawrence...................



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[Non-text portions of this message have been removed]
--- Inbolger@yahoogroups.com, Hugo Tyson <hhetyson@y...> wrote:
> She has no internal or external ballast except the engine.> Hugo
Tyson. Launceston, TASMANIA, Australia.


Hugo,
Your father did a first class job building MERLIN(Marina Crusier)
and I'm sure she is a joy for all who use her.However,she is a heavy
boat for her length(when was the last time you saw a modern
21'fiberglass powerboat that weighed 2 1/2 tons?). A big chunk of
that weight comes from the backbone structure with its hardwood
keel,skeg and deadwood,
sided 5", and heavy floors,sided 2 1/2", throughout.Her construction
is similar to traditonal New England catboats which used massive
timbers in their keel,skeg and deadwood,both for strength
and"ballast".Over time,this "ballast" became even more meaningful as
it soaked up hundreds of pounds of water.
I suspect that a goodly part of MERLINs excellent manners and
aplomb in waves comes from the substantial mass of her structure and
this allows her to get away without the use of any additional"iron"
ballast,per se.
For Grant to retain a bit of that effect in his conversion
project,he really should keep that ballast,especially since we are
talking about a relatively light hull structure with low inertia.

Thanks for posting all those wonderful pictures!

Sincerely,

Peter Lenihan,preparing for another deep freeze,predicted to be even
colder then last weeks,from along the shores of the damned near
frozen over St.Lawrence...................
Marina Cruiser is far superior. My father has built the only one in known existence( "Merlin"). She performs very well and is a very large small boat! Typically a boat of her beam and draft and freeboard would have been about 26'-28' long.If he built her again (Very unlikely as he's very happy with her as she is.)he would consider stretching her to 25'-26'(Like the original Elco 26 that Bolger based the design apon!) for a bit more room in the cabin(she's got a huge cockpit) and maybe 1 knot extra top speed,swinging the largest diameter propeller that would fit with a 3:1 reduction gearbox with the Yanmar 18 HP diesel.. As it is she does about 6.5 Knots with a Yanmar 2GM20 (18 HP diesel/ 16HP continuous) which is as good as you can expect for a full displacement hull of 21'3" and 5000lbs displacement.
She sails well with the Dipping Lug auxillary rig, but is mainly used as a motor cruiser.She has no internal or external ballast except the engine.She's been featured in MAIB Magazine in a two part article as "Marina Cruiser" and I've posted a few pictures of her among other boats in the photos section under the heading: Tyson's Boats.

Hugo Tyson. Launceston, TASMANIA, Australia.
Nels <arvent@...> wrote:
I just happened to notice that the hull has almost the same
dimensions as MARINA CRUISER in "Boats With An Open Mind." (page 36)

Therefore if a ballested keel is used it should also have a dipping
lug rig. And a cast iron fireplace.

Argh! Nels



Bolger rules!!!
- no cursing, flaming, trolling, spamming, or flogging dead horses
- stay on topic, stay on thread, punctuate, no 'Ed, thanks, Fred' posts
- Pls add your comments at the TOP, SIGN your posts, and snip away
- Plans: Mr. Philip C. Bolger, P.O. Box 1209, Gloucester, MA, 01930, Fax: (978) 282-1349
- Unsubscribe:bolger-unsubscribe@yahoogroups.com
- Open discussion:bolger_coffee_lounge-subscribe@yahoogroups.com



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[Non-text portions of this message have been removed]
I just happened to notice that the hull has almost the same
dimensions as MARINA CRUISER in "Boats With An Open Mind." (page 36)

Therefore if a ballested keel is used it should also have a dipping
lug rig. And a cast iron fireplace.

Argh! Nels