Blok D

[russianhalo117]

Per subscription paywalled information: https://russianspaceweb.com/protected/angara5-vostochny-flight1.html

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Note that the DM-03 for this mission is a custom hybrid series to test the fixes from the previous DM-03: Persei failure, debut DM-03: Orion, to use up stored and soon to expire Sea-Launch DM-SL/DM-SLB stages and test next generation DM-SLU hardware for the Soyuz-5/6/7 programme.

Do we have a list of remaining Sea Launch DM-SL/DM-SLB stages available for conversion?

Anik in his lists showed DM-SL No. 38L and No. 39L as still with Energia.

There was also this from a court document:-

На основании пункта 1.1 Договора истец обязался выполнить и сдать ответчику, а ответчик принять и оплатить работы по теме: «Участие в сопровождении электрических испытаний РБ ДМ-SL № 38Л-44Л в части обеспечения функционирования СУ РБ на КИС 3AО "ЗЭМ" (далее - работы) согласно Ведомости исполнения (в редакции Протокола урегулирования разногласий № 1 и Дополнительного соглашения № 1), являющейся приложением № 1 к Договору.
Дело №А41-76911/2020
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Based on clause 1.1 of the Agreement, the plaintiff undertook to carry out and hand over to the defendant, and the defendant to accept and pay for, work on the topic: “Participation in the support of electrical tests of RB DM-SL No. 38L-44L in part ensuring the functioning of the Management System of the Republic of Belarus on CIS 3AO "ZEM" (hereinafter referred to as the work) in accordance with the Statement of Execution (as amended by the Protocol for Resolving Disputes No. 1 and Additional Agreement No. 1), which is Appendix No. 1 to the Agreement.
Case No. A41-76911/2020

Bump as the remaining Sea Launch/Land Launch inventory is being converted for Persei and Orion test flights ahead of production modernization and restart. Blok-DM-SLU now uses Persei and Orion as baseline architecture if Sea Launch/Land Launch is ever rebooted post conflict.