Techno marine 67 "Wedge one"

[Wedge one]

Hi all,

I am looking for some info on our recently purchased open cruiser.
We bought it from a fench brooker specialised in bigger boats who need work.
The story behind this boat is that was in the hands from the french customs, no idea why.
What i found out untill now:
1987 build technomarine cobra 62 build by arno.(tecno marine at the time?)
Complete refit and relooked with a new rear by the original shipyard in italy now 67ft
Twin 71V12 Detroits 870HP

We are lying in the south of france now in palavas les flots and we will be heading south to spain.

The engines only have 370 hours and run perfectly.
I spent the last 4 days to repair the water pressuresystem, fridges, hydraulic gangway and some other stuff.
Also the kohler generator had a faulty control panel. He started right away but died after 10seconds and after some tech calls and a lot of play with my volt meter I am 90% sure that it is the control module.
It will be here tonight so i will know soon.

We are lifting the boat to pressure wash it today, fill her up and we will leave tomorrow.

I will post some pics later.
If anyone knows more about this boat please let me know and if you guys are interested in our trip I will keep you posted

Thanks, raf

 

[PowerYachtBlog]

Tecnomarine and Cantieri Navali dell Arno Leopard are separate entities but they do have similar paths.
Tecnomarine was indeed founded by Filippo Picchiotti (cousin of Arno Leopard owner Paolo) and Moreno Maestrelli in 1972.
They will sell to Poalo Ponzo who also owned Lusben Craft. Both yard establishments where sold to Azimut Benetti Group in early 2000s.
They extended the Azimut GRP shed and used the rest as refit. Lusben Yard in Viareggio is huge.

Other similar paths in the past is that they both used designer Paolo Caliari for quite some time lines and interior.
Eventually Tecnomarine will move to Stefeano Righini in the early nineties for this.
The C62 Cobra has a Don Shead deep Vee hull.

Here is some Tecnomarine history; http://nautipedia.it/index.php/TECNOMARINE
Paolo Caliari tribute; http://www.poweryachtblog.com/2014/04/paolo-caliari-1932-2014.html

Was she built at Arno or it is a typo. I know they had a lot demand for the Cobra lines especially the 42 (sold over 100).
So its possible they would give jobs to other yards in the area (common at the time) in Viareggio to be honest.
It is also possible Arno was doing the hulls of the 62 so the certificate appears this way.

If refitted nicely the C62 (especially in Open version) is a nice boat, with superb sea-keeping capabilities.
Some technical details in it though are a pain to fix though, as the molded fuel tanks in the deep Vee hull being one of the most painful.

 

[MapisM]

Some technical details in it though are a pain to fix though, as the molded fuel tanks in the deep Vee hull being one of the most painful.

Is that a C62-specific problem W, or do you mean that any structural, hull molded tanks are bound to be problematic in the long run?
I'm asking because, as you probably know, DP is another yard whose boats are all built with that type of tanks (of which I've seen a few), and in principle it's a great idea with several advantages, imho.

 

[PowerYachtBlog]

Is that a C62-specific problem W, or do you mean that any structural, hull molded tanks are bound to be problematic in the long run?
I'm asking because, as you probably know, DP is another yard whose boats are all built with that type of tanks (of which I've seen a few), and in principle it's a great idea with several advantages, imho.

Yes in principle it is for CoG reasons, but if you have a problem it is a pain to fix.
I saw a C62 which had a leaking fuel tank and the tank if I remember well used to go from the end of the engine room till end aft part around the keel.
And it was a pain to fix although the tank is not structural.

In the eighties I would also say GRP and its water proofing was also in its infancy.
Apart DP also Hatteras do it that way, as do Viking and a host of other builders nowadays.
Today or from mid nineties tech is much better but problems can still happen.

So yes for CoG reasons I can understand why they did it. For repair its a bit painful.

 

[MapisM]

Yup, all agreed.
What I was trying to understand is how frequent these troubles actually are, with this type of tanks.
According to Giorgio DP, it has been necessary to rebuild the internal tank impermeabilisation on just one of their boats, so far.
Ok, it's easy to guess that problems get more likely with age, but some of their boats are already 30yo, by now...!

Besides, what do you mean by "non structural"?
I would have thought that all GRP tanks molded with the hull bottom are structural by definition.
They surely are in DPs, anyway.

 

[PowerYachtBlog]

Structural - fuel tank being part of the stringer system not just resting on it, molded with it
Non structural - tank being of a separate entity to stringers even though it can be resting on it

That's a very good number 1/30, but I think DP was very much ahead in construction and GRP in the eighties and nineties.
Surely one of the best in Italy at the time, along VZ and Sarnico and Uniesse in the mid nineties for sure. Great boats indeed.
You can understand it with the last two who where outsourcing Riva workers unhappy with how thing where moving with Vickers in those days.

DP boats helped by Carlo Trezzi where conservative yet had that some thing ahead of time or beyond it.
I think the DP 43 and 55 Al'Nair, fully enclosed hard top where superb.

 

[Wedge one]

Mine has the fuel tanks after the engines, not in the hull.
Water and fuel are one after the other

 

[Wedge one]

https://photos.google.com/u/1/album/AF1QipOk8jEPA7w5f2wUiGGlpp2Tq9NA8FjNZCIBRTLV/photo/AF1QipPE0bM7UNrGrNHYzxI2HKQ-U3mdUigDuEkIgpHl

https://photos.google.com/u/1/album/AF1QipOk8jEPA7w5f2wUiGGlpp2Tq9NA8FjNZCIBRTLV/photo/AF1QipP2m9bUJZ3k0WjNxzZwrO45UHDf58JKK3YmLwTe

 

[MapisM]

Structural - fuel tank being part of the stringer system not just resting on it, molded with it
Non structural - tank being of a separate entity to stringers even though it can be resting on it

Aha, understood. I never came across any boat with the latter type of tanks, so far.

100% agreed ref DP construction, in general.
While not all of their boats aged very well in terms of design, I have yet to see any modern boat which I would rate anywhere near what DP built in the 90s, in terms of build quality.

 

[PowerYachtBlog]

100% agreed ref DP construction, in general.
While not all of their boats aged very well in terms of design, I have yet to see any modern boat which I would rate anywhere near what DP built in the 90s

Dalla Pieta 55/56 = still looks awesome, shear line makes it look it is from another decade
DP 48/50 = can be produced for ever
DP 58 HT = can be produced for ever, possibly it only loses points cause it is an aft cabin sport boat, which are becoming a bit out of fashion nowadays, and here even cause its corridor is on top (like old Pershings) not in the side. To be fair though she was launched in 2004 and its line is still awesome.
DP 59 Fly = possibly one of the best looking Flybridge boats of its time
DP 52 Asterion = okay squarish windows design, and stern with separate platform (which looks very separate) yes make it looks as a modern 80s boat
DP 68 and 65 = they could have made more of these, indeed Leonard yachts from South of Venice extended the mold and made more of them as a 72
DP 72 HT = still looking good. I like it cause it does not want to look as a Mangusta and a Pershing which is what most open yachts in this size want to do
DP 80 HT = same as above
DP 43 Asterion = I think it looked good for its time and still is okay
DP 43 Al'Nair = was a pioneer its time, I have a spot for it so cant comment
DP 55 Al'Nair = same as above but the sweeping shear line screws it