Diorama Shipwreck tanker Olympic Bravery, 1976, France 1:700

[dhenning]

Wonderful work....but did I see a French Praline box in one of the photos??? Sort of like someone yelling "Squirrel!" to a pack of dogs!

Enjoying the build and still can not believe that it is 1/700 scale! I'm waiting for one of you three 3D print masters to make the 1/700 bicycles!

Dave

[Dan K]

Fantastic work.

[Iceman 29]

Wonderful work....but did I see a French Praline box in one of the photos??? Sort of like someone yelling "Squirrel!" to a pack of dogs!

Enjoying the build and still can not believe that it is 1/700 scale! I'm waiting for one of you three 3D print masters to make the 1/700 bicycles!

Dave

Thank Dan and Dave!

Dave, It will be very complicated to print a bike at this scale, it would be around 2.5 mm long..

The final fitting of the forecastle's equipment and accessories is almost finished, a coat of varnish will be applied later to make it homogeneous.

[Fliger747]

I suppose that a decent bike could be made with PE? At the airport and large industrial buildings (ie. Boeing) tricycles seem to have favor over bikes. Possibly cargo carrying or maybe liability (slip and fall) lawyers.

Cheers Tom

[Iceman 29]

I'm back after 15 days of vacation.

I had made some progress before leaving, here are some pictures.

Laying the railing, and fairleads, spare anchor etc.







Drawing and installation of the pump room ventilation ducts.



Today, drawing of the breakwaters.

[Pieter]

Nice work on that piping run. I hate to think how much time that would take in brass and styrene.

[Goodwood]

I've always been interested in these massive supertankers. Someday I hope to see a Knock Nevis in 1/700, with a good side-by-side comparison with a Yamato and/or a supercarrier...

And you're going to take this one and wreck it! Deliberately! Takes some balls, I tells ya...

[JIM BAUMANN]

,.... most interesting to see the considerable deck-camber in the 3/4 from aft on-deck image!!

[Iceman 29]

Yes it's typical from this type of ship.

Deck-camber allows the evacuation of sea water packets by hundred of tons when there is a cross swell mainly when the ship is loaded.

The freeboard is relatively low. I have seen waves crossing the deck from one side to the other, especially off the Durban where the swell is often very deep when we were coming back from the Persian Gulf by the Cape of Good Hope, we could not distinguish the deck anymore. It is of course impossible to cross or to work on the bridge in these moments, or even to check if everything is ok at the front, unless you change course, if it is necessary.

Some personal pictures taken in 1980 on a "smaller" crude oil tanker (100.000 tons) in the Mediterranean Sea.

I sailed on these both Moroccan tankers sister ship, owned by Hassan II (Petramar compagny managed by Comanav). One of them sank in Mohammedia ( Maroc ), built in Italy, MT Samir and MT Al Idrissi.





















Discharge of the 8 pistons of the Fiat 2-stroke main engine for refurbishment in Dubai on a barge.

[Fliger747]

Great info! Only a little harder than changing spark plugs on a Porsche? At least they designed in access! I saw some photos of a large hole cut in the side of a 110 ft crab boat to remove and overhaul an engine. Submarines were even more fun!

Cheers: Tom

[Iceman 29]

Here Tom no need to make holes in the hull, a panel of the machine compartment allows the exit of large elements, piston, liners, alternator. For a crankshaft, it would be another story. It is usually repaired on site with a portable lathe.

The Fiat marine engines were a bit special, they had a double intake manifold, because they were equipped with turbochargers but also with boost pumps. Quite complicated for the maintenance.

One of the particularities was that the crankcase was completely separated from the cylinders. It was a pure 2-stroke engine, no exhaust valves.

This meant that the piston could be seen going up and down 2.20 meters in its sleeve, very impressive. That's why the piston had a rather high skirt compared to a classic 2-stroke engine like a Burmeister or a Sulzer.

They were very difficult to maintain for us. The two small pipes that we see along the piston rod are called "trombone", they allow the cooling of the piston head, with oil.

Fiat has not been a great builder of large 2-stroke marine engines.

A design that corresponds to this type of engine, here a 2 cylinder, it lacks 6!

The Fiat marine engines were a bit special, they had a double intake manifold, because they were equipped with turbochargers but also with boost pumps. Quite complicated for the maintenance.

One of the particularities was that the crankcase was completely separated from the cylinders. It was a pure 2-stroke engine, no exhaust valve.
This meant that the piston could be seen going up and down 2.20 meters in its sleeve. That's why the piston had a rather high skirt compared to a classic 2-stroke engine like a Burmeister or a Sulzer.
They were very difficult to maintain for us. The two small pipes that we see along the piston rod are called "paperclips", they allow the cooling of the piston head, with water on this engine, with oil on the other brands of 2 stroke engines. Fiat has not been a great builder of large 2-stroke marine engines.

A design that corresponds to this type of engine, here a 2 cylinder, it lacks 6!



An interesting PDF, a good resume:

http://www.jicef.org/pdf_cimac/pdf_cima ... t_2013.pdf

[Fliger747]

Pascal:

Thank you for the explanation. My knowledge of large piston marine engines ends with the Uniflow triple expansion reciprocating steam units.

Regards. Tom

[mikegr]

Yes it's typical from this type of ship.

Deck-camber allows the evacuation of sea water packets by hundred of tons when there is a cross swell mainly when the ship is loaded.

The freeboard is relatively low. I have seen waves crossing the deck from one side to the other, especially off the Durban where the swell is often very deep when we were coming back from the Persian Gulf by the Cape of Good Hope, we could not distinguish the deck anymore. It is of course impossible to cross or to work on the bridge in these moments, or even to check if everything is ok at the front, unless you change course, if it is necessary.

Some personal pictures taken in 1980 on a "smaller" crude oil tanker (100.000 tons) in the Mediterranean Sea.

I sailed on these both Moroccan tankers sister ship, owned by Hassan II (Petramar compagny managed by Comanav). One of them sank in Mohammedia ( Maroc ), built in Italy, MT Samir and MT Al Idrissi.

I really like the photos taken by seamen especially the old ones that turned up a bit yellowish...

this is what you probably have experienced

[Iceman 29]

Thanks for the picture, yes it is exactly that.

Worse than the HMS Hood that the sailors affectionately called the "submarine".

[Iceman 29]

Some small progress on the project, although the fine Breton weather has not encouraged rapid progress.

The railing is still a 1/700 proof, the fitting of the bridge accessories is also taking time.

[Fliger747]

Very convincing work at this small scale. Nice masking of the helicopter circle.

Regards: Tom

[Iceman 29]

Thank Tom.

I don't like decals, and when I can do without them, I do. I prefer to paint when I can. You can choose exactly your color.

I bought this cutting machine to make my own masks, it's very precise.

To try it is to adopt it.

https://www.swingdesign.com/products/si ... ng-machine



I use it for Nomadic also for electrolytic brass etching.

[Fliger747]

I see one of the sailors on the Nomadic upper deck has apparently barely returned from a rowdy shore leave! A builder of an RC Australian training vessel used his wife's Cricut machine to do the lettering masks for his vessel, though he said it struggled a bit at smaller fonts such as the ships name on the stern.

I wasn't fully able to understand from the link what types and thicknesses of material could be cut. The Strathmore art papers are solid enough for structural ship construction with careful design. Certainly an ability to make painting masks is quite useful. What type of material works well for this, frisket?

Thanks: Tom

[Iceman 29]

I use this film, but the Oramask 810.

https://www.amazon.com/Oracal-ORAMASK-S ... ljaz10cnVl

https://www.amazon.fr/Orafol-ORAMASK-Ma ... 1454&psc=1

[Fliger747]

Pascal:

Thank you for the information! One of our local sewing craft/sewing stores has the same unit that you show, though I'm not sure about the film that you are using. The cost here is $199 USD. The other crafts store we have has the Cricut brand machines. The larger one's have considerable capacity for cutting thicker materials such as balsa and basswood. I am not sure as to the sharpness of cuts, but I presume thinner styrene could be cut. A while back a gentleman was working on a 1:48 DE and had cut the pieces from styrene, at the time using a laser cutter. The construction of the upper works resembled closely actual ship construction methods from plate steel.

Cheers: Tom