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Patrol & mine warfare vesselsIn service
Patrol boat
T.991-class patrol boat is a patrol boat. It was built by Marson Shipbuilding Mahidol Adulyadej Naval Dockyard. Reported operators include Royal Thai Navy.
ThailandMarson Shipbuilding Mahidol Adulyadej Naval Dockyard
Royal Thai Navy
3
3
Patrol boat
170 tons, 186 tons (full load) (est)
38.7m (est)
6.49m (est)
3.8m (est)
2 x MTU 16V 4000 R41 R, 2 x diesel generators 140 kW
Maximum : 27 knots
At cruising speed knots: 1,500Nm
29
Combat System : Navigation : S G Brown Mk 31 Attitude and Heading Reference Systems (AHRS) Fire Control : Thales MIRADOR
2 × MSI-DSL 30mm DS-30M , 2 x 12.7mm
Thailand 0 references
Reference text from Wikipedia contributors, used under CC BY-SA 4.0.
True scale
Sourced dimensions beside a 1.75 m human reference.
Points represent sourced observations, including revisions. Revisions on the same effective date are not separate inventory events. Ranges appear in the table and are not plotted as exact points.
| Observation / report period | Value | Source | Claim state |
|---|---|---|---|
| 29 Sept 2026 | 38.7 m | Wikipedia contributors | superseded |
T.991-class patrol boat equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.