Submarine yacht, yacht submarine, affordable, autonomous

affordable private submarine

2008-04-06T12:24:00.000-07:00

Affordable private submarine, purchase a hull at moderate cost, fit it out to a submarine dream yacht concretesubmarine.com

yacht submarine concept and test

2008-04-05T09:00:00.000-07:00

Yacht submarine concept and test has been successful, be part of the submarine yacht project concretesubmarine.com

Submarine yacht autonomous

2008-04-05T08:56:00.000-07:00

Submarine yacht autonomous, the range and autonomy of a submarine yacht can be superior to a surface yacht as cost of locomotion is lower and loading capacity is higher concretesubmarine.com

Submarine yacht affordable

2008-04-05T08:52:00.000-07:00

Submarine yacht affordable, due to its ability to operate weather independent and with a small engine, a submarine yacht is a economic alternative to surface yachting see - concretesubmarine.com

Private submarine yacht

2008-03-20T07:29:00.000-07:00

Private submarine yacht - is a possible option at a very affordable cost - see (concretesubmarine.com)

Submarine yacht project

2008-03-16T12:23:00.000-07:00

Submarine yacht project, submarine yachts have been built and tested. A 200ton submarine yacht is in construcction (concretesubmarine.com)

Submarine private yacht

2008-03-16T12:15:00.000-07:00

Submarine private yacht, a private submarine yacht is possible and can be a very affordable form of marine live aboard life style. In fact private submarine yachts can be operated with lower maintainance cost and built with lower building cost than surface yachts of similar size. (concretesubmarine.com)

Submarine houseboat yacht

2008-03-15T16:09:00.000-07:00

Submarine houseboat yacht, our submarine yacht hulls are meant to provide a sufficient living space to live abord for long periods of time, a confinement experiment on board of BEN FRANKLIN showed that 130 tons is a minimum living space for a small crew during 30 days of below ocean living. See more - (concretesubmarine.com)

Submarine Yacht Caribbean

2008-03-08T13:14:00.000-08:00

Submarine yacht caribbean, a submarine yacht 18m /200tons is in construcction at Navtech shipyard colombia caribbean - handover in california 14 october 2008 - submarine yacht caribbean

build yacht submarine

2008-03-07T15:17:00.000-08:00

Build yacht submarine, purchase hull at affordable cost, get a autonomous, low maintainance cost, marina independent, submersible yacht, safe in all weather conditions. Tested concept. (concretesubmarine.com)

Autonomous yacht affordable

2008-03-06T11:33:00.000-08:00

Autonomous yacht affordable, to be really autonomous a yacht must be in conditions to stand any possible weather condition - this is hard to achive for a surface boat. On the other hand it is easy for a submergible yacht see more about (affordable submarine yachts)

submarine yacht

2008-03-05T20:04:00.000-08:00

Submarine yacht, affordable submarine yacht, autonomous submarine yacht, oceancrossing submarine yacht, submarine yacht concept, submarine yacht prototype tested (concretesubmarine.com)

personal submarine yacht maintainance

2008-01-21T18:39:00.000-08:00

Maintainance of a personal submarine yacht is below the cost of maintainance for a similar sized surface yacht - ( concretesubmarine.com)

autonomous submarine yacht size is key

2008-01-15T14:26:00.000-08:00

If a personal submarine is too small to work autonomous and mothership free, the best thing to do is to make it as small as you can to push the weight down and make the handling easier - finally you will end up with a newt suit as perfect application for mothership based mini sub deployment.

On the other hand you can make your psub bigger, so you can live aboard - which brings you to a mothership free submarine yacht beginning at 20 tons - all what stays in middlefield between those concepts comes somehow short.

minimum size of submarine yachts

2008-01-06T05:05:00.000-08:00

For a mothership free submarine yacht that is intended to have ocean crossing capability we postulate a minimum size of 130 tons. This is what BEN FRANKLIN drift dive experiment showd as necessary space for a small crew in a 30 day confinement experiment.

For a autonomous weekend cruiser down to 20 tons might be a possible size. See more ( concretesubmarine.com )

small p-sub versus submarine yacht

2008-01-03T01:42:00.000-08:00

Having space and/or time to work on getting safely back to the surface is a very nice to have in a given PSUB. Having space to be able to put on a wet or dry suit as well as perhaps SCUBA gear can save ones life at times. Even having one or more Spare Air type SCUBA bottles can be useful in small subs. Also having a sub designed to have enough generally none compressible buoyancy, like syntactic foam or some really good HBT's that make a sub positively buoyant even when all the SBT's and the main pressure hull is full of water and one or more drop weights it dropped. Can make it easy to surface without having to leave the sub, unless entangled in such a way that it's your best option for survival, or some other unforeseen issue. But generally with such a design, if the leak is bad enough to justify it, all you need to do is release one or more drop weights and your out of trouble quickly.

Regards

Brent Hartwig

submarine yacht versus small p-sub

2008-01-03T01:36:00.000-08:00

There are several other issues to consider when comparing the small PSUB vs. large PSUB that are not often discussed:

1. Reserve Buoyancy Smaller submersibles have an exponentially smaller reserve buoyancy in case of an emergency. What might be a minor leak in a large submersible can be catastrophic in a small sub as it will take a smaller mass to adversely affect buoyancy.

2. Ease of Repairs As Carsten noted, it is much easier to craft a large PSUB with plenty of room to work. In case of an emergency, this makes it possible to accomplish repairs while underwater. In the smallest PSUBs this is impossible and you might not be able to surface.

3. Probability of Escape There are two points here:

a. Moderate flooding in a larger hull allows time for thought about how to go about your escape as every emergency is different. Minor flooding in the smaller subs that have the operator prone or semi-prone can quickly lead to incapacitation of the operator.

b. The smaller PSUBs are very cramped and do not allow much room to move around inside and will be difficult to egress from in an emergency. Body form-fitting small PSUBs should be considered for the building of an escape simulator to work out and practice emergency egress under a variety of conditions. The largest PSUBs are multiple compartmented and facilitate isolating the leak to a compartment while escaping to another. Moderate sized submersibles may provide sufficient room if properly designed to allow a successful escape of a single operator; multi-passenger moderate sized PSUBs require much more design, thought, and practice for successful egress of all personnel.

Carsten makes some good points for both large and small PSUBs. While I would love to build a big PSUB, practicality of my situation (and probably most PSUBERS) dictates the moderate sized personal submersible.

R/Jay

Respectfully,

Jay K. Jeffries

Andros Is., Bahamas

destructive testing submarine yacht

2008-01-02T09:21:00.000-08:00

This ferro cement is really nice to work
with, I'm thinking of later making a big boat using ferro cement with ferro
reenforcing rings at close intervals. I would like to then test to
destruction but here in California they would make me go down and pick up
the pieces and then take to a landfill and bury everything. Other option
would be to take to a Navy pressure chamber and test but that would cost
$$$.

Brian Cox

lead acid batteries

2008-01-02T07:24:00.000-08:00

let me just ask - why do we like improwed batteries ?

Lead acid batteries are old facion, they are heavy and energy content is low. These new
batteries are - perhaps less heavy, and the energy content is still quite low.

My point is - that noting in the imagineble future of batteries will ever come close to
giving us an electric submarine with a range to transit to and from ofshore dive sites in
the facion that a diesel - electric boat can do. I am instaling a 1.5 ton battery in UC-3
- costing a fortune - and it gives me less than an hour of the output of the dieselengine
- that uses about 12 liters of fuel pr. hour. Meaning 1500 kg lead acid = 10 kg
dieselfuel. If the super Li-ion comes - and stops exploding and gets economicly
accesseble - the figures may be 750 kg battey = 10 kg dieselfuel. Electric endurance only
still is very limeted. Part two - I enjoy the waste heat from the diesels - electric
boats tend to be quite cold.

Worth following, yes ofcause, but this is not the answer to range as such. Only Adm. H.
Rickovers politically chritical system and the good old diesels can do that.

Some hover manufator of the 1950ies clamed that in the next decade ( the 60ies ) most
hovers for home use would be nuclear powered - so no need for a wire. If anybody here
knows where I can get a few of those hovers !!!

Best regards,

Peter Madsen

submarine yacht versus small p-sub

2008-01-02T06:27:00.000-08:00

De: Peter Madsen Dinamarca to psubs.org

Hi Brent,

You ask:

"How big of a diesel motor do you suppose Cliff could fit in his R300?? ;)'

But of cause - I just wrote the post in a general sence, and psubs do range in size from
less than 300 kg to more than 60 tonnes.The little Freya at 3.5 ton was diesel powered to
begin with - and what really makes the limit is when the waterline get too short for
surfaced speeds of more than say 3 knots ( that would be 4 -5 meters waterline )

As for size in general - the added cost in time and materials when increasing the size of
a psub seems to me to largely offset by the reduction in troubling miniature work. As a
result construction time of 32 ton UC-3 will like be less than for 6.5 ton Kraka. I don't
spend more time on it pr. week than I did when building Kraka with Claus, but I can walk
inside !

I do understand the need for a trailer submarine if you live in Utah, and that might be
to small for hybrid propulsion. Okay. But if you are lucky to live within driving
distance of the sea - having a sub that is always in water is quite practical and in that
type of operation size - and thus diesel propulsion becomes feasible.

Most psubs that I know of are type K250 or the like...and if their builders make that
size of boat because that is what they want - then its the only right decision. But if it
is because they feel that they cannot find the hours to make a bigger boat...then they
may be misunderstanding that miniaturizing is very expensive.
Min point in short - a bigger psubs is not always a bigger project - it may in fact be
easier done than a miniature. So why worry ? Think BIG !

May I remind you that many of you live in the proud nation that put a man on the moon ? (
now all psubbers will arm their torpedotubes and lock them on me...)

By the way, I have newer really paid a harbor fee - with a little luck your submarine
will be so mystic and fun that the harbor will not charge you.

- This said - what I like about psubs is the enormous span in different ways of solving
the same puzzle,
and that you can be in the game with all sorts of background, size, resources ect.

Shoot me !

Best regards, Peter

submarine yacht, submarine yachting, ocean-going

2007-12-31T08:34:00.000-08:00

Submarine Yacht, Submarine Yachting, Ocean-going

- Blog is dedicated to the concept of taking yachting beneath the waves. We postulate that submarine yachting is a posibility. We also postulate that there are a couple of major advantages asociated to submarine yachts over surface yachts. We further postulate that (based on the tests with the prototype) submarine yachting can be achived at similar - or even lower - budgets than surface yachting.

The drift dive performed by BEN FRANKLIN back in the sixties and the experience with our prototype also encourages us to think about taking the concept furter to "on open ocean living".

Please check out:
www.concretesubmarine.com

To get the basics - and welcome your input...

submarine yacht concrete hull

2007-12-31T07:13:00.000-08:00

Welcome to concrete submarine yacht forum !

- here we are discussing specific aspects of concrete as hull building material for submarine yachts as suggested in :

www.concretesubmarine.com

Submarine concrete submarine pressure hulls in use today

http://imulead.com/tolimared/concretesubmarine/anuncios/ac

Concrete submarine hull ideas and discussion

http://imulead.com/tolimared/concretesubmarine/anuncios/ad

please check the above "reading list" before posting to this forum to avoid repeating "old" already discussed themes...

Yacht submarine for a california customer 18m 200 tons live aboard submarine

2007-12-29T12:31:00.000-08:00

Submarine Yacht 200 tons 18m for a California customer.

(www.concretesubmarine.com)

This boat is a copy of the successful prototype duplicating it in scale. We are building this submarine yacht hull in Cartagena de Indias Colombia. Handover is sheduled for 14. october 2008. This project will be closly monitored and supervised by colombian navy and maritime authority DIMAR.

The prototype in 1996 testbed for the new concept of affordable submarine yachting at a cost compareable to surface yachts.

The new project in Cartagena de Indias. We build the hull and ship it for outfitting on its own keel to California.

This project will be closly monitored and supervised by colombian navy and maritime authority DIMAR.