1/200 USS Pamanset (AO-85) Tanker T2-SE-A2

[Iceman 29]

No steam cloud normally, if there is no leakage, the condensed water pipe returns the steam/water mixture to the distilled water tank in the engine room.

Nylon was it's stretchiness effectively, but it also dampens the movement of the ship alongside.
There is on big ships, on which I sailed for a long time, a mix, 20 meters of nylon and the rest in steel cable, the nylon is used as a fuse in case of too much tension, although the brakes of the winches are also adjusted and calibrated to deviate their drum in case of overload.

Personal picture ( Mississippi river 2003):

[Iceman 29]

A modern winch with a nylon/steel mix, procedure to check the drum brake, there is an index on the brake handwheel which indicates the force setting at which the drum will rotate when the pulling force is reached. This procedure is carried out regularly for safety reasons and controlled by the authority frequently.

A video showing the procedure with an hydraulic jack, vYou just have to make a calculation with the hydraulic pressure and the surface of the jack piston, the radius of the lever arm to know the traction force at the brake.

https://www.youtube.com/watch?v=h8fgMfgn3MU

[Iceman 29]

I finally finished drawing the stoppers, not so easy...

I've finished the simple fairleads, too. Just need to print.



















The impression of the stoppers, side walls a little too thin, there's a hole, but it will do it by fixing.

The forecastle is almost complete, there are still the two 40 mm anti-aircrafts platforms I started to draw on pictures, not easy to get the correct proportions in this case, without a plan...

Statistically, the 40 mm are the guns that have shot down the most Japanese planes on US Navy ships, especially suicide planes...

Recent demonstration in the Russian style, with modern electrical directors:

https://youtu.be/dSp7CipN1pw


https://youtu.be/155RE957EgA


https://youtu.be/mDVH_tlXslk


https://youtu.be/ByJbinkiZ9U


USS Pamanset AO85.













The drawing of the forecastle platform is finished. It wasn't easy without plans and with few pictures.

3 pictures helped me, but I improvised a lot. I couldn't figure out where the ladder access of this platform was located...

A small ladder on the back probably.















Printing of the 40 mm Bofors gun platform.

"The 40 mm Bofors is an anti-aircraft gun designed by the Swedish gunsmith Bofors in the early 1930s. Its initial version was called 40L60, because the barrel has a theoretical length equal to 60 times the caliber. It was manufactured in Sweden by Bofors itself, but also under licence in many other countries. Many of the nations involved in the Second World War used it in different versions, and even afterwards. Many versions are still in use in the years 2010. (Wiki)"

I first printed a 100% version of what I had drawn, having a doubt about the general size, I thought it was a bit big, but only the placement on the mock-up could give me some information.

So I tried to get a complete impression of the piece for testing, knowing that it would probably not be a complete success. The impression was indeed not very good with a few flaws. But this part allowed me to calculate the reduction of scale again of 10% as for the 2 rear batteries of Oerlikon 20 mm, same thing for the windlass. That's good to know.

The ammunition boxes are perfectly out. My little sailor miniature helps me a lot with the size of these parts. Especially at the height of the platform walls, a little higher than a railing for protection of the sailors.

Both feet are out very well too, the angle of the bottom of the foot corresponds exactly to the slope of the forecastle.

I've slightly simplified the second platform by modifying the underside of the floor to make it completely flat, to make it easier to print, but I'll reprint this piece with the original underside of the floor with the stall tomorrow.

This part has to be perfect because you can only see it on the front once it's in place...

I will replace the two ladders on the forecastle with longer ones because they are a bit short, the longest ones on the WhiteEnseign board. But I have some longer ones left over from the Bismarck.

Both models.



It's too big.







Small one. This is perfect.







Tower for the M51 director is done!

I put some more details on platform, loudspeaker, box for may be, binoculars, helmets etc..



I also ordered some expensive Northstar resin miniatures directly, there are 18 sets with the MK51 firing director.

https://northstarmodels.com/product/1-2 ... ctor-crew/



I printed the crow's nest of the shooting director today, it came out very well, I feared for the structure that I had made thin...

I hope that the diameter of the nest is good, I would vary with the Northstar M51 director and the figurines. I have a PE ladder to add.

[Iceman 29]

Hello David,

On the picture you're talking about, it seems that there are two ladders on the portside and starboard of the stern. We can guess the rungs from the floor along the protective wall.

In my opinion there are no holes in the floor of the platform, it's dangerous and it takes a lot of space.

There are as many versions of double platforms as there are ships apparently... they are almost all different.

I don't have a picture rear view platform of the AO-85.

Some various configurations:

[Iceman 29]

Possible David. But we speculate on this detail... Until we find the good picture!

[Iceman 29]

Aug 18, 2020.

A few days ago I came across a photo I liked, showing a Higgins LCVP on the rear platform of a T2. The idea came to me to represent one of them. But apparently I didn't see any 1/200 to mount, too small.



So I found a free 3D model on the internet, but as often when scaling down 1, some walls become too thin to be printed and this is not modifiable. Moreover the hull was too round and not angular enough, we couldn't see the bilges. Bilges that were to make the already very simple construction much easier.

I was inspired by it for some details.





I came up with a construction plan yesterday morning that works just fine for me.



The Pamancet participated in the Iwo Jima campaign, so the presence on board a LCVP is credible.

I also found this photo taken on the beach of Iwo Jima during the landing. I'd put this registration number PA 196-5 on it, I like the idea.

PA196 is the number of the Victory Ship USS Logan APA-196:

"For Iwo Jima the ship was assigned to the 23rd Marines of the 4th Marine Division. She landed Hq Company of the 133rd NCB on yellow beach D Day for Shore Party duty. Later, on 21 February, at 0445 hours".

https://en.wikipedia.org/wiki/USS_Logan_(APA-196)

The drawing took me all day, I'm going faster now, and I know better the pitfalls to avoid when designing.

I first broke down the "paper" plan in the program into a canvas.

Then I started to create the sketches of the couples, etc...

I still have a few details to add, and it will be printed tomorrow probably.

https://i.postimg.cc/k4DkwkZq/Screensho ... 10-502.jpg



















Wiki:



Design



This landing craft (also called a barge) was created by Andrew Higgins (1886-1952) in his New Orleans factory. Its hull shapes are inspired by those of boats sailing in the Louisiana swamps. More than 20,000 were built by Higgins Industries and its licensees.



3 Built of marine plywood (teak, Oregon pine) with a metallic grey paint colour that falsely suggests it was made of metal, the LCVP could carry 36 soldiers, the equivalent of a section, and sail at 9 knots (16.7 km/h) when fully loaded. Its bottom is not flat as you might think, but it has a 'V' shape at the bow and a 'V' shape at the stern so that grounding does not prevent the boat from going backwards, even in 50 cm of water.



Soldiers boarded the barge by going down along nets unfurled against the hull of the troop carrier where it was docked. They disembarked from the barge on land via a mobile ramp, the only metal and armoured part of the boat, which was lowered to the bow of the barge. This tilting bow door was added in 1942 by the U.S. Armed Forces to use the boat for landings.


Technical Specifications



Displacement: 8,100 kg
Length: 11 m
Width: 3.29 m
Draft: 0.96 m aft, 0.7 m forward
Speed: 9 knots (16.7 km/h), 15 knots at light speed (27.8 km/h)
Armament: 2 Browning 1919A4 (7.62 mm) machine guns.
Crew: 3 (1 helmsman, 1 deckhand, 1 gunner)
Capacity: 36 soldiers or one 2,700 kg vehicle
225 hp 6-cylinder 2-stroke diesel engine (Gray Marine) or
250 hp petrol engine (Hall-Scott)

Contribution:

"Andrew Higgins... is the man who won the war for us... If Higgins had not designed and built these LCVPs, we would never have landed on an open beach. The whole strategy of the war would have been different. "
General Dwight Eisenhower.

I liked this site showing the restoration of an LCVP for a museum, there are pictures, plans and video:

http://www.robertsarmory.com/Higgins-Boat.htm





In Russian doll style, I thought I'd put a Willys Jeep in the LVCP.

Luckily this time I found a free one that was intended for printing, although it is on a scale of 1.

I found it here, thanks to the contributor, it's pretty accurate and in parts. It's more practical.

https://impression3d.laposte.fr/en/3d-m ... sembly-kit

He advises to print it at 1/35 or 1/48, certainly draw for these scales. At 1/200 it can get complicated...

These pictures show the Jeep printed with wire with a D7 probably. Thread reaches its limits here.

So I printed at night, while I was sleeping.

The printing is rather good considering the size, the folding windshield didn't survive. The gear lever and the brake are there. The steering wheel must have fallen into the bin, no matter how well the main one came out. I replaced the parts with salvaged PE, the classic three-spoke steering wheel was made in a wheel bar by removing branches.

The curved antenna is made of copper wire, the vertical is brush hair and the antenna shrouds, scratch as I like. I am stopped here.

Then painting, Humbrol 155 olive green, Humbrol 9 tyre, seats, Humbrol matt 62.

No marking.

I had some personal photos of Jeep Willys taken in Normandy for reference.

Merville battery.






Arromanches.








I have inverted the can and the tyre later, an error on the model..








LCVP printing, I printed a second one, rectifying some thicknesses for finishing, the first one was already not bad.

I put a PE propeller.

I painted the barge in Ocean grey 5-O, then I put some ageing, but I'm not yet used to acrylic which pumps a lot, normally it should be two less patinated, the pictures increase the patina a bit too.

From what I've read, these boats were suffering a lot in the landing zones, afterwards also for supply.









Later i have reduced the patina.




Better.

[Fliger747]

Great progress. I think the gunnery tubs on the forecastle contain 3"50 guns rather than 40 mm?

Nice job on the Jeep and the LCVP, printing certainly a better way to produce these than hand constructing a gaggle of these!

T

[Iceman 29]

Great progress. I think the gunnery tubs on the forecastle contain 3"50 guns rather than 40 mm?

Nice job on the Jeep and the LCVP, printing certainly a better way to produce these than hand constructing a gaggle of these!

T

Indeed Tom, I noticed it in the following episode, but there is also 40mm Bofors on board, my work is not lost.

Difficult to know exactly the weaponry of the Pamancet and position, the sites are contradictory...

For the LCVP, I had a really good time drawing it.
I'm going to receive a brand new 4K 3D printer from Phrozen in a few weeks, with a much better resolution and print speed, I can't wait to see what it's going to come out and compare. The resolution is lowered from 50 to 37 microns!

https://www.youtube.com/watch?v=2J8fIMsvZL8

[Fliger747]

My dad's ship had a Jeep, the captain won it in a card game. They painted it grey and stenciled some bogus numbers on it.

[Iceman 29]

[Fliger747]

On the photo of the Forecastle gun tubs, note the wire frame to the aft of the tubs. These were used on guns with out automatic cutouts to prevent firing at some part of the ship. The decks of the tubs were probably not planked but made of a heavier STS splinter proof (resistant) plating.

I looked at the review of the new 3D printer. Sounds rather exciting! Where is the design software available?

T

[Iceman 29]

I use Fusion360 from Autodesk (Author of 3DsMax etc..). A rather user-friendly use.

[Iceman 29]

Aug 20, 2020.

I painted the platforms and the forecastle to see what it looked like, I'll have some details to review and do including the front flagpole and its platform. I still have two fairleads to glue in the making.



I placed a temporary anchor chain to align stopper and windlass. We'll see if the chain ordered fits the stoppers.



I started to draw the 40mm Bofors gun, thanks to a friend for documentations, in part.







The design of the 40 mm Bofors canon is almost finished, I limited the details to optimize the printing for 1/200. It took me a little time because there are a lot of elements.

I still have some details to adjust before printing. The railing will be in PE.









I tested a first animation fonction with my 3D software Fusion 360, I'm groping :

https://youtu.be/7MrtXNu2BtY


I was able to start a series of impressions of the cannon, I made several tries to try to master it as well as possible, but it's small and not easy. The limits of the impression are there. It doesn't matter.

I had to raise the base as well.

The cannon tube didn't come out correctly, while many other smaller and finer details came out well, like the footrests, the seats... So I cut and put a brass barrel tube I had in stock. I understood why later...







Installation of the aft forecastle railing and fabrication of a platform with stair to access the central passageway of the main deck, PE White Ensign and mini staircase from the Bismarck's PE.





In fact I just found my mistake about my firt print, the barrel tube was hollow and therefore very thin, hence the collapse during printing, yet I had checked ... it is by increasing the scale to 1/48 directly with Chitubox, the program that generates the file for the printer that I realized the thing, I will reprint to be compliant.

I'm dragging my heels a bit at the moment, I spend a lot of time on the guns, because there's not much 1/200 on the internet for me, even at Shapeway, it's not very good in terms of definition, so I'm sticking to it.

I start the design of the 3 inches / 50 ( 76 mm) guns, they are placed (2) on the front platform and 2 at the back of the ship. A new big job, but I have what I need in docs.

Here is the latest version of the 40 mm Bofors. I have already printed a 1/48, the printing is superb, but then I took the drawing again to add some details it was missing a little bit.

The 1/48 Bofors test.



The big and little brother...







Documentations :



3 inch/50 ( 76 mm ) barrel



Service Features
Type Naval Artillery
Service 1900 - ?



Designer Bureau of Ordnance
Year of conception Around 1898
Product copies Mk 2 to 8: 1900
Mark 2, 3, 5, 6 and 8 variants
Mark 10 to 22
Mark 27, 33, 34

General characteristics

Barrel length alone 150.3 inches (3.8 m)
Length in 50 gauge
Caliber 3 inches (76 mm)
Power supply Loading through the cylinder head

In the history of the United States Navy, several 3-inch, 50-caliber guns existed and equipped U.S. ships from the late 1890s to the late 1990s.

Declined in several models ("Mark"), we can count 3 historical evolutions, which were mounted as anti-torpedo or anti-aircraft guns in secondary artillery of battleships and cruisers, in main artillery of destroyers, or as submarine guns.

Mark 10 - 22

Most of the guns of this series were used as anti-aircraft guns, the first being built during the First World War.

Widely used until the 1930s, they were gradually replaced by 5 inch/25 caliber guns and then by 40 mm Bofors.

During the Second World War, they were the main armament of small ships, such as escort destroyers, submarines, merchant ships and oil tankers. Thus, 14,000 units were built between 1940 and 1945.

The documentation I retrieved to draw it, it is more complex than the 40 mm Bofors.



























Crewmembers George May, Evan Cray and Robert Corpus demonstrate the 3"/50 caliber dual-purpose gun on the bow of the Red Oak Victory ship. T
his area of the ship is newly open to visitors on a limited basis.

https://youtu.be/sciUyOYzpgU


In the USA everything is allowed!

https://youtu.be/LZQpR888QuU


Printing of 2 1/48 Bofors barrels for fun.

There are sailors in 1/48 that could make a nice scene on a double platform. I will keep this in stock.

https://www.shapeways.com/product/3FLC9 ... at-set-2-7

https://www.shapeways.com/marketplace/m ... Combat+SET

Not cleaned yet.




The 3"/50 (76 mm) barrel is currently being designed:







This 3-inch cannon is taking shape, but there is still work to be done. I have work to do on my 1:1 scale cars, it's holding me up...







This 3 inch gun is finished.









https://distefano3dprint.com/collection ... 0653690945

There will only be one 5 inch (127 mm) left on the rear platform to design unless I buy one from Distephan to see the quality:



The 3 inch to 1/200 from the same manufacturer.



Printing: The result is quite good, the tractor saddles are printed, it's really fine, especially the vertical feet at 2/10 of a mm. Can't wait to have the Phrozen 4K for small parts.

[Iceman 29]

I think, David, that there are errors on these sites, you only have to look at and zoom in on the photo of the Sebec AO-87 to understand and generaly on Escambia Class Ship, it is supposed to have the same armament as the AO-85 and the same hull according to these sites. We can clearly see that it is equipped with a single barrel Oerlikon...

20 mm oerlikon twin, very large protection plate.



Sebec:

http://www.navsource.org/archives/09/19/19087.htm





Another one:



40mm Bofors single:

[Fliger747]

This is the USN 20 mm twin, barely larger than the single. These are the mounts I made for my APA. Some of the compactness was by having L&R magazines.

HNSA has a good reference on them: http://archive.hnsa.org/doc/gun20twin/index.htm

They also have a manual for the 3"50.

T

[Iceman 29]

Not very nice to post recent photos of the construction in the course of the assembly. The subject of the Royal is in French, I made the effort to transfer it in English here. At the beginning of some posts I put the publication date, I never hid that I started in July 2020. Now if it goes against the rules, I will stop posting here. But no moderator has yet reported any problems to me.

[Fliger747]

Not a problem! I started on my APA some 55 years ago... Same with my Missouri and the Alaska is a youngster at maybe 30 years? There of course was a considerable hiatus and sometimes our time and skill set situation improves. Sometimes the new work is a re construction, I've done a few of those!

Good luck with the new printer when it arrives!

[Fliger747]

The twin 20 mm had a single cover slipping over the paired barrels, which are quite close together, so it is possible that the one's in the photo are twins. A matter of small import as either could be true on any particular date.

The twin Bofors had numerous advantages over the (army) singles. Being a powered unit they could be directed by the Mk 51 directors automatically (and more quickly) and had water cooling instead of air cooling which allowed a much greater sustained rate of fire.

Interesting that the ship had the 3" 50's. The had three of those on Whitehurst (DE 634) as the "main armament", a relatively ineffectual AA weapon and only a marginal anti (surfaced) sub weapon. Later DE's went to a battery of two 5"38 enclosed mounts. However four of these plus the fantail 5"38 open mount gave decent protection against surfaced subs, for instance for Atlantic operations. They took up a lot less deck area than a 5" and had a pretty decent rate of fire and required few other ship resources. For Pacific operations replacing each of those with a Bofors twin would in theory have been more optimal. Postwar the fast firing 3" twins replaced Bofors (1:1 for a 40 mm quad) with great increase in effectiveness as the 3" could handle a VT fuze.

Looking forward to seeing the output of the new 4K printer. Actually not that expensive and maybe worthwhile if I can figure out the software, a task I rate alongside my trying to learn Russian.

Cheers: Tom

[Fliger747]

Having been somewhat inspired by your 3D work i have been making a few small drawing s of deck equipment. But I cam e across this method of making a prop. It might or might not fi the features of your software!

https://www.bing.com/videos/search?q=sp ... &FORM=VIRE

Cheers: Tom

[BB62vet]

Having been somewhat inspired by your 3D work i have been making a few small drawing s of deck equipment. But I cam e across this method of making a prop. It might or might not fi the features of your software!

https://www.bing.com/videos/search?q=sp ... &FORM=VIRE

Cheers: Tom

Tom,
That's quite a demo!!! Of course, the guy drawing it obviously has some experience with the program, however, he is doing a good sales pitch for the software!!! He's getting MY attention!!!

Hank