Updated with new photo. Originally posted April 30th.
Russia's New Submarine Belgorod Out Of The Water

The Russian Navy's new special mission submarine, K-329 Belgorod, has returned to the construction hall. The submarine is expected to start sea trials soon so this may be a temporary measure to inspect the hull. Or it may indicate a larger problem...
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There is renewed attention on Italy's tradition of midget submarine design and construction. Qatar has ordered two subs from an unreported Italian midget submarine manufacturer. One of the possible firms is Drass.

OSINT. Iran has been expanding the little-known shipyard. The site, on Qeshm Island in the strait of Hormuz is constructing one of the three new catamaran missile corvettes for the IRGC. 

The Royal Navy is exploring future scenarios which include mother submarines. These could act as the central node on a loose network of uncrewed underwater assets. These would launch UUVs (uncrewed underwater vehicles) to "Survey otherwise inaccessible areas".
State-controlled Chinese television channel China Central Television (CCTV) has aired a piece showing a Wave Glider.

