ARMOR Sentinel Cabin 25 aluminum patrol boat running
Sentinel Cabin 25
Patrol & Ballistic · Platform

Sentinel Cabin 25: Full-Cabin Patrol Boat, Jet or Outboard

The Sentinel with a full cabin, from 25′ to 29′, on waterjet or outboard power.

  • 25′–29′
  • Full cabin
  • Jet or outboard
  • 38 kn (44 mph) (jet)
  • ARMOR hull collar (patented)

The Sentinel Cabin 25 is the full-cabin Sentinel: a different hull from the Console 21, with a moderate deadrise and a cabin that keeps the crew out of the weather on long shifts. The ARMOR hull collar gives RHIB-style buoyancy and protection with nothing to puncture, patch or keep inflated. It isn't a tube fitted to the hull: the welded aluminum hull is shaped to form the collar, and we fill it with closed-cell foam, CNC hot-wire cut to fit, that won't get waterlogged.

Choose waterjet or outboard power. The jet version has no underwater appendages, so there's nothing below the hull to strike in shallow water. We build it from 25′ to 29′; a diesel jet needs the boat stretched to about 27′.

Request a QuoteCall (360) 317-6154

Built your wayEvery size, layout and power package on this page is a starting point. Length, beam, layout, power and outfitting can all change, and we work it out with you in 3D CAD before any plate is cut.

Start your custom build
Built in Anacortes, WA, USAIn-house design & engineeringBuild capacity to 100′CNC router cutCNC formingPulse MIG & TIG weldingVertical integration: we do it allDiesel & waterjet experts
ARMOR Sentinel Cabin 25 aluminum patrol boat running
Sentinel Cabin 25 running

Specifications

Length25′–29′ (25′ shown)
Beam8′-4″ (25′)
Deadrise18°
Fuel100 gal (25′)
Top speed38 kn (44 mph) (25′ jet)
PowerGas inboard on waterjet, or outboard. Diesel jet from about 27′.
JetHamiltonJet HJ241 (60% reverse, 33% lateral thrust)
LayoutFull cabin
DeckWelded, self-bailing
Bottom / sides1/4″ 5086 / 3/16″ 5086
CollarARMOR hull collar: formed by the welded hull, closed-cell foam filled, patented
BallisticOptional panels, certified to NIJ III+

Who it's for

Sheriff's offices and police marine units working all year · Shallow-water patrol (jet version) · Search and rescue crews who need shelter

A cabin for long shifts

Patrol doesn't stop for weather. The Sentinel Cabin puts the crew inside, keeps the collar's protection outside, and lets you choose the drive that suits your water.

Most collars are fitted to a hull: inflatable tubes that can be cut or punctured, or sealed collars whose foam can take on water and have to be replaced. The ARMOR hull collar is part of the hull. Above the bottom, the welded aluminum hull sides step out and up to the gunwale to form the collar, and we fill it with closed-cell polyethylene foam, CNC hot-wire cut to the shape.

The foam takes on almost no water, so the boat doesn't get heavier as it ages, and the collar adds buoyancy high on the hull for a steadier boat at rest and reserve flotation that makes it virtually unsinkable. The design is protected by US Patents 10,336,414 and 10,780,958.

WaterlineCenterline12345678
  1. 1The hull forms the collar. Above the bottom, the welded aluminum hull sides step out and up to the gunwale.
  2. 2Closed-cell polyethylene foam, CNC hot-wire cut to fit and set in from inside the boat. It takes on almost no water and doesn't swell.
  3. 3An inboard panel closes the collar. It comes off for access, and on a protected boat it's a ballistic panel.
  4. 4A deck lip inboard of the panel keeps deck water out of the foam and sends it aft.
  5. 5A panel retaining plate on the foam side holds the foot of the panel, with the deck lip on the inboard side.
  6. 6Open on the inboard side: no airtight seam to fail and nothing sealed in to trap water.
  7. 7The outer chine runs clear of the water on plane, so it adds no drag, and meets the water as the boat heels, so it pushes back.
  8. 8The bottom runs out under the collar: more planing area for the beam, with the deadrise set for the water you run.
The ARMOR hull collar, port side, not to scale. Protected by US Patents 10,336,414 and 10,780,958. Drawing: ARMOR Marine.

Build it your way

Choose the pieces. We engineer the boat around them.

Length

25′ to 29′

Power

Waterjet or outboard; diesel jet at about 27′ and up

Cabin

Seating, electronics and law-enforcement package to your standard

Ballistic

Optional ballistic panels built into the collar, fitted now or added later

Popular options: Diesel jet (27′+) · Law-enforcement lighting and siren · Cabin heat · Ballistic panels

BALLISTIC PROTECTION, YOUR CALL. Ballistic protection is optional: ballistic (bulletproof) panels add cost and weight, so we fit them when the mission calls for it, and they can be added later. Our panels are certified to NIJ III+, with higher levels available on request. How we armor a boat

How the Sentinel 25 is built

  • 1/4″ 5086 bottom, 3/16″ 5086 sides
  • 3/16″ 5052 welded, self-bailing deck
  • 3/16″ 5086 transom
  • 3/8″ keel with 1/4″ beaching plate
  • ARMOR hull collar (US Patents 10,336,414 and 10,780,958): formed by the welded hull and filled with closed-cell foam
  • Inboard collar panels; a deck lip keeps water out of the foam

The ARMOR standard

  • Every part modeled in 3D CAD and reviewed with you before plate is cut
  • CNC-cut parts, plate-marked with forming and welding instructions, so every hull matches the drawing
  • Formed on a 12′, 200-ton CNC press brake
  • Welded to written procedures, to AWS D1.2 and AWS D3.7
  • Marine-grade 5086 and 5052 aluminum throughout

Built in our 16,000 sq ft Anacortes facility, with a full-length 5-ton bridge crane and room for vessels up to 100′. Because every part is drawn in 3D CAD and CNC-cut, we're set up for multi-boat and fleet contracts as well as one-off custom builds.
Warranty: 10-year limited hull warranty for commercial use; lifetime limited hull warranty for recreational use.

ARMOR Marine welder in a welding helmet and gloves, welding an aluminum hull in the Anacortes shop

Missions it serves

Law Enforcement & PatrolFire & RescueMilitary & Government

Questions

The jet has no underwater appendages and runs the shallowest water. Outboards are simpler to service. Both get the full cabin.

Yes, from about 27′. The boat needs the extra length to carry a diesel jet.

Yes. A collar is the buoyant, protective edge along a boat's sides. Ours does that job, but it's built as part of the welded hull instead of fitted to it, which is why our patents call it a hull collar.

The hull sides step out above the bottom to form it, the space is filled with CNC hot-wire-cut closed-cell foam, and panels close it on the inboard side. It's protected by US Patents 10,336,414 and 10,780,958.

No. It's closed-cell polyethylene foam, CNC hot-wire cut, not expanding foam, so it takes on almost no water and doesn't swell, and a lip around the deck keeps deck water out of the collar.

No. It's optional and can be added later.

It can be. Ballistic (bulletproof) panels are optional, certified to NIJ III+, with higher levels on request. They add cost and weight, so we fit them when the mission calls for it, and they can be added later.

Start your Sentinel Cabin 25

We design every boat in-house, so we can build to your exact requirements and help you solve the technical problems a catalog boat can't.

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Related: Patrol & Ballistic · Ballistic Protection · Sentinel Console 21 · Tactical Response 29