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[radko1111]

it would be a great campaign

I've read in a book that had three aircraft hangar

[ggrewe]

Would love to have the I-400 series sub & accompanying Serian float-plane in game.
They are both impressive, with the Serian being especially sexy   
Surprised our Japanese friends have not jumped on these already?

[congo]

Upper photo was shot after capture at Ulithi Atoll. The Seiran could be readied for flight in 7 minutes as it was hooked to umbilicals while in the hangar tube so by circulating hot coolant the operating temps could be maintained prior to start which would greatly reduce warm-up time. Wing folding was very unusual as compared to American folding wing aircraft. The spar carrythru rotates in the fuselage until leading edge of wing points down and  then upper pin is retracted hydraulically and wings folded aft along fuselage. After aircraft was deployed from tube it was elevated and the floats were attached in preparation of launch.

[razor1uk]

Wished for... Panama Map, IJN aero carrying/deploying sub ('surface ship' model) of some-kind, and a Gansai Bokudan (spelling?) to go with it...

[radko1111]

[congo]

I think most Japanese aircraft are quite pleasing to look at, but from a restorers standpoint they all usually suffer from innergranular corrosion in the extrusions and forgings  that are used throughout the aircraft. The M6A1,s center section spar is a box type structure with the lower and upper caps terminating at a bolted steel fixture with lots of shimming for an accurate fit. The attach was of the finger type. This area can also be subject to bimetallic types of corrosion and usually is more predominant in Japanese aircraft then German, US or British built ac. I believe that all this relates to instabilities imparted during the alloying process. Operating in salt air environments does not help the situation either.

[Diving_Hawk]

The reason that makes most IJN aircraft difficult to restore is the alloy used in them.
The ESD alloy(used extensively in the A6Ms) is known to crystalize and wear over time when exposed to salt air.

Since that process takes some years when you are near wartime you could not care less about not having the aircraft operational at 100% after 15 years especially wqhen using it would save weight , making the aircraft better.
So that was not a problem for the Japanese aviation industry. The planes were not expected to live after 15 years anyway.

But that thing makes the restoration of such aircraft extremely difficult.

[congo]

The reason that makes most IJN aircraft difficult to restore is the alloy used in them.
The ESD alloy(used extensively in the A6Ms) is known to crystalize and wear over time when exposed to salt air.

Since that process takes some years when you are near wartime you could not care less about not having the aircraft operational at 100% after 15 years especially wqhen using it would save weight , making the aircraft better.
So that was not a problem for the Japanese aviation industry. The planes were not expected to live after 15 years anyway.

But that thing makes the restoration of such aircraft extremely difficult.

The salt air has very little to do with the innergranular corrosion that exist in Extra Strength Duraluminium or ESD if you prefer. It stems from the quanities of copper that were used during the alloying processes and the failure to adhere to strict quality controls during these processes. This type of corrosion is present in all Japanese aircraft not just the Zekes. what makes this such a difficult problem is that the corrosion happens from the inside out and you will not see it till many years later but it is still present internally. It is usually identified by the delayering of the aluminum as the ions of copper tend to striate along boundary layers within the extrusion or forging.

Intergranular corrosion is generally considered to be caused by the segregation of impurities at the grain boundaries or by enrichment or depletion of one of the alloying elements in the grain boundary areas. Thus in certain aluminium alloys, small amounts of iron have been shown to segregate in the grain boundaries and cause intergranular corrosion. Also, it has been shown that the zinc content of a brass is higher at the grain boundaries and subject to such corrosion. High-strength aluminium alloys such as the Duralumin-type alloys (Al-Cu) which depend upon precipitated phases for strengthening are susceptible to intergranular corrosion following sensitization at temperatures of about 120°C.

[HundertzehnGustav]

so their bones are rusting from the inside... kind of.
more like "falling apart" at a microscopic level
and to do a good , safe job, entire frame parts must be replaced by new ones, made with new materials...
compared to other materials where correct treatment form the outside is possible.

[bren]

There are many mods for the "Silent Hunter". Maybe it would be nice to borrow out models of the submarines and other ships?
For mods see here, for example.

[radko1111]

[HusarderLuft]

We need at least 1 japanese submarine in game - common

a Type B or a Kaidai


Kaidai VI class, ????

http://midway1942.org/img/ships/ijn_ss_i-168.png

I-168 sank the Yorktown