Depotinstandsetzung Hohlstab Klasse 352 Seehunde S04 und S18: Germany procurement notice

Development and reported outcome

Marinearsenal issued a depot-maintenance tender covering Seehund 04 and Seehund 18. The work includes extensive inspection, maintenance and repair of the German Navy's remotely controlled Class 352 mine-countermeasure surface craft. The procurement notice did not disclose an estimated contract value.[S1] [S2]

Program, platform and stakeholders

Programme or contract: Depotinstandsetzung Hohlstab Klasse 352 Seehunde S04 und S18. Platform or product: Seehund 04 and Seehund 18, Class 352. Platform classification: Large (approx. 25 m). Recorded customer, operator or intended user: Marinearsenal / German Navy (reported headquarters/country: Germany).[S1] [S2]

Mission and technical scope

The following are classifications recorded in the source master, not additional claims of operational deployment: Mission/use-case classification: Mine Countermeasures. Operating mode: Remotely Operated Surface Vessel (ROSV).

Contract, value and shipment signals

Recorded quantity, delivery, demonstration or volume signal: 2 existing USVs. Delivery schedule, procurement window or milestone status: Planned yard period July 21, 2026–January 15, 2027. Recorded contractual start: 21-Jul-26. Recorded contractual end: 15-Jan-27. Recorded contractual duration: Approximately 6 months.[S1] [S2]

Source verification and interpretation limits

UXV Searcher master source-coverage note: The German Navy tender covers depot maintenance of Seehund S04 and S18. Bundeswehr identifies Seehund as an approximately 25 m remotely controlled MCM surface drone; the planned maintenance period is Jul. 21, 2026-Jan. 15, 2027.

Interpretation boundary: The tender, notice or request stage does not by itself prove a signed contract, selected supplier, or physical delivery.[S1] [S2]

UXV Searcher analysis — what the development changes

UXV Searcher interpretation — procurement requirement / tender: The Germany USV record for Depotinstandsetzung Hohlstab Klasse 352 Seehunde S04 und S18 is best treated as a procurement pipeline signal. A published requirement can indicate addressable demand, but it is not an award, supplier revenue, shipment, or fleet increase.

Traceability for buyers: Marinearsenal / German Navy is the identified buyer, operator or intended user. Do not assume a named supplier or commercial allocation without a separate award document.

Client-use interpretation: For intelligence users tracking Mine Countermeasures, the relevant next proof points are mine-countermeasures requirements, autonomy integration and acceptance milestones. Track the award notice, signed value and accepted delivery quantities before upgrading this demand signal.[S1] [S2]

Quantitative evidence, calculations and limits

Quantity/scope signal: 2 existing USVs. Counting rule: Requested scope; not a delivery or award total. Delivery/timing evidence: Planned yard period July 21, 2026–January 15, 2027. Scheduling language is not independently proof of completion or acceptance. Reproducible calculations: Planned start-to-end interval: 178 days ((2027-01-15) - (2026-07-21) = 178 elapsed calendar days). Refer to the calculation cards for assumptions and limitations.

Quantified requirements are potential procurement scope, not realised hardware orders or sales.[S1] [S2]