Project 877/636: Kilo class SSK

If the sub is buils outside the Black Sea it is allowed to travel where and when it want.

Montreux Convention Article 12. wrote:
Black Sea Powers shall have the right to send through the Straits, for the purpose of rejoining their base, submarines constructed or purchased outside the Black Sea, provided that adequate notice of the laying down or purchase of such submarines shallI have been given to Turkey.

Submarines belonging to the said Powers shall also be entitled to pass through the Straits to be repaired in dockyards outside the Black Sea on condition that detailed information on the matter is given to Turkey.

In either case, the said submarines must travel by day and on the surface, and must pass though the Straits singly.

hoom wrote:

If the sub is buils outside the Black Sea it is allowed to travel where and when it want.

The treaty is absolutely clear.

Montreux Convention Article 12. wrote:
Black Sea Powers shall have the right to send through the Straits, for the purpose of rejoining their base, submarines constructed or purchased outside the Black Sea, provided that adequate notice of the laying down or purchase of such submarines shallI have been given to Turkey.

Submarines belonging to the said Powers shall also be entitled to pass through the Straits to be repaired in dockyards outside the Black Sea on condition that detailed information on the matter is given to Turkey.

In either case, the said submarines must travel by day and on the surface, and must pass though the Straits singly.

This shouldn't be so hard.
Worse, we discussed this at length previously.

And what does a sub that was in the med do other then rejoning its base?

If Turkey was not happy, they could have easily said no

On Thursday, April 25, the Stary Oskol submarine passed the Bosphorus and Dardanelles straits as part of the transition to the Baltic, where the submarine will undergo scheduled repairs at one of the shipyards of North-West Russia. This was reported in the press service of the Black Sea Fleet.

"In order to verify the design calculations for the use of new materials and equipment during the construction of the 636.3 series of submarines, which includes Stary Oskol, it was planned to study their performance in a climate zone with higher temperatures for the full annual cycle of operation," in the press service of the Black Sea Fleet.

Prior to departing for repairs, Stary Oskol will inspect a number of life support systems in southern latitudes.

But I don't get the bit about testing materials & equipment in warm climate, there are 636.3s in Algeria, Vietnam & China already...

"In order to verify the design calculations for the use of new materials and equipment during the construction of the 636.3 series of submarines...

Alrosa earlier this month, still showing startling lack of progress

hoom wrote:Then why are the doors open?

Maybe it was build like a "prototype" to test pump jet and they saved some money on other systems so it is less capable than a normal kilo

But they've already exported a bunch of 636.3s to warm-climate countries.

I mean it makes sense if there is actually some new stuff on the BSF ones thats not in the export ones.
It just seems weird to talk about testing stuff in tropical conditions when they already have a bunch of the same project number active in tropical conditions.

PapaDragon wrote:
Submarine Kolpino arrived to Novorosiysk

This means Black Sea sub fleet is now fully updated

4 more Bykovs and naval base in Novorosiysk will be fully stocked

https://sdelanounas.ru/blogs/119663/

The submarines of the Black Sea Fleet "Stary Oskol" and "Krasnodar" will perform tasks as part of a permanent operational connection of the Russian Navy in the Mediterranean Sea until the end of 2020, after which they will take up scheduled repairs in St. Petersburg. This was announced on Thursday Tass source in the shipbuilding industry.

"It is expected that at the end of 2020, the boats will embark on a scheduled repair at the Admiralty Shipyards (St. Petersburg) at the company where they were built," the agency’s source said.

In April, the "Old Oskol" and "Krasnodar" became part of the Russian compound in the Mediterranean, where they replaced the same type of submarines "Veliky Novgorod" and "Kolpino", which carried the combat watch off the coast of Syria. Every three months their crews were rotated.

Earlier that the "Old Oskol" will be renovated in north-west Russia, the press service of the Black Sea Fleet reported.