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Patrol & mine warfare vessels1993-present
Patrol vessel
Grajaú-class patrol boat is a patrol vessel. It was built by AMRJ , Estaleiro Mauá, Peene-Werft, INACE. Reported operators include Brazilian Navy Namibian Navy.
BrazilGrajaú-class patrol boat
Marinha do Brasil · CC BY-SA 2.0 · Resized · CC BY-SA 2.0 · Source ↗ · ModifiedGrajaú class
AMRJ , Estaleiro Mauá, Peene-Werft, INACE
Brazilian Navy Namibian Navy
Macaé class
1993-present
1993-2009
13 (1 Namibian Navy)
13 (1 Namibian Navy)
Patrol vessel
197 tons standard, 217 tons full load
46.5 m (152 ft 7 in)
7.5 m (24 ft 7 in)
2.3 m (7 ft 7 in)
2 × 2,740 hp (2,040 kW )
2 MTU 16V 396 TB94 diesel engines
26.5 knots (49.1 km/h; 30.5 mph)
2,200 nmi (4,100 km; 2,500 mi) at 12 knots (22 km/h; 14 mph)
2 × Rigid-hulled inflatable boat
31
29
Decca 1290A , equipped with Global Maritime Distress Safety System and night vision
1 Bofors L/70 40 mm cannon ; 2 Oerlikon 20 mm cannon
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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 |
|---|---|---|---|
| 28 Sept 2026 | 46.5 m | Wikipedia contributors | superseded |
| 28 Sept 2026 | 46.5 m | Wikipedia contributors | approved |
| 28 Sept 2026 | 46.5 m | Wikipedia contributors | superseded |
Grajaú-class patrol boat equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.
BrazilNavy exact named class holdings of Grajau. Active, operational-reserve and training units excluding equipment in store; November 2025 IISS assessment. Named service only, not a national or parent-force total or combat-readiness measure. Source role(s): PATROL AND COASTAL COMBATANTS / PB. No heading aggregate, carried armament, crew, payload, factory production or future order count inherited. The own fetched design source declares this exact class and its PDF operator country; ship capacities and fitted launcher/armament counts are retained as source scope, not added to hull quantities.
Reported count for Grajaú. Service scope: Brazilian Navy ships; does not replace a national total. 1 distinct count cell(s) from the same source list; shared rowspan cells counted once. Excludes retired/reserve/on-order rows. Count column(s): quantity: 12. Origin: Brazil. The listed variants/roles are the scope, not an immediately deployable count. The components do not establish one inventory census date; the stored date is the retrieved source snapshot.
Namibia