English
Español
Français
Italiano
- Cruising Speed: 21 kn
- Maximum Speed: 28 kn
- Beam: 13' 0''
- Hull Material: Aluminum
- Displacement: 17,000 lb
- Fuel Tank: 2 x 150|gallon
- Fresh Water: 2 x 100|gallon
- Holding: 1 x 40|gallon
Sentry is a purpose-built 2019 Armstrong Marine 38 Monohull combining welded-aluminum commercial construction, a large working deck and an enclosed all-weather pilothouse. Although designated as a 38-foot model, her transom working-platform configuration brings overall length to approximately 43 feet, with a substantial 13-foot beam.
Twin Cummins QSB6.7 diesels rated at 419 hp each are coupled to ZF 286A straight-drive transmissions. During the May 2025 survey sea trial, Sentry recorded approximately 21.5 knots at 2,400 rpm and 28 knots at 3,000 rpm in calm conditions.
Originally owned and operated by the Washington State Department of Natural Resources, Sentry was acquired by her present owner for overseas commercial projects.
Sentry offers a practical platform for commercial utility work, environmental or hydrographic survey, dive support, patrol, crew transport, research operations or conversion into a distinctive private expedition boat.
Denison Yachting is pleased to assist you in the purchase of this vessel. This boat is centrally listed by W S Yacht Brokers - Seattle.
Denison Yacht Sales offers the details of this yacht in good faith but can’t guarantee the accuracy of this information nor warrant the condition of this boat for sale. This yacht for sale is offered subject to prior sale, price change, or withdrawal from that yacht market without notice. She is offered as a convenience by this yacht broker to its clients and is not intended to convey direct representation of a specific yacht for sale.
The enclosed pilothouse provides excellent visibility and direct access to the working decks.
Available documentation includes:
The May 2025 survey identified maintenance items involving the port-engine seawater pump, hydraulic steering system, autopilot rudder-angle sender, rudders and propellers. The bow-thruster anode was subsequently replaced by CSR Marine.
Sentry was partially disassembled to ship overseas. Plans changed, and so Sentry is presently stored ashore at a secure yard in Ballard/Seattle.
The following equipment was removed, packed and represented as stowed aboard:
Minor reinstallation, recommissioning and testing will be required before normal operation.
Contact our team to schedule a private showing.
APPLY FOR A LOAN
GET AN INSURANCE QUOTE
TRADE YOUR YACHT
PREPARE DOCUMENTATION