From what I remember, this date is not exact, but from what I know there was a naval program, although it is not fully known to me, with a total tonnage of 200,000 tons, in which an aircraft carrier was included, plans of this type in which even battleships were included taken into account more or less seriously.
I would have to check other marine programs because maybe I have this marine program.
An example of such a naval program with an aircraft carrier that I know is Benedykt Krzywiec's plan from 1929, it included
2 battleships of 20,000 tons each
3 cruisers of 10,000 tons or 3 cruisers of 8,400 tons
1 aircraft carrier with a displacement of 5,500 tons
1 mine-laying cruiser with a displacement of 5,300 tons
destroyers
a) 4 Wicher-class destroyers
b) 3 Turbine-class destroyers
c) 3 Regele Ferdianand-class destroyers
submarines
a) 6 Maneli class submarines
b) 3 Redoutable-class submarines
c) 3 Wilk-class submarines
d) 3 Balilla-class submarines
The total displacement of the fleet is 113,285 tons, because 96,575 tons is the tonnage of the submarine fleet and 16,710 tons is the tonnage of the submarine fleet.
But this is not the official plan.
We never asked about aircraft carriers, although apparently the British were supposed to give us some aircraft carriers during the Battle of the Atlantic, as far as I remember, but this legend has not been confirmed.
I wrote about this case here.
As for the maritime program, Plan M.
It had been developed since 1943 and approved in 1944, and it was intended to be implemented after the war for 15 years, but only if Poland was a free and independent country.
First, we return to Poland with what we have, i.e. 1 cruiser, 6 destroyers, 6 submarines and an MTB.
Then we would get small ships like traulers etc
they wanted to get the rest of the ships from the USA and Great Britain, the ships after the division of the German fleet, plus maybe the Italian ones, i.e. some destroyers to replace the lost destroyers, a cruiser or two, etc., and what the Germans left us in Polish ports, for example Gneisenau.
And the 3 battleships they wanted were to have a displacement of 35,000 tons, while the 6 aircraft carriers had a displacement of 8,000 tons.
And in this document for this sea plan there is North Carolina, and Hosho.
So I guess the Hosho idea relates to this maritime program.
Although the aircraft carriers were supposed to be from Great Britain, as I remember.
I will make a separate post about this maritime program and write about it in more detail.
However, in reality, this program could not actually be implemented, because Poland was supposed to be under the influence of the USSR, and consequently Poland was communist.
