Armstrong Marine 38 Monohull Aluminum 2019

Sentry is a specialized 2019 Armstrong Marine 38 Monohull, expertly crafted with robust welded-aluminum construction. It features a spacious working deck and a fully enclosed all-weather pilothouse. Although it is classified as a 38-foot vessel, its transom working-platform design extends the overall length to around 43 feet, complemented by a generous 13-foot beam. Powered by twin Cummins QSB6.7 diesel engines, each delivering 419 hp, and paired with ZF 286A straight-drive transmissions, Sentry demonstrated impressive performance during the May 2025 survey sea trial, reaching speeds of approximately 21.5 knots at 2,400 rpm and 28 knots at 3,000 rpm in calm waters. Previously owned by the Washington State Department of Natural Resources, Sentry has been acquired by its current owner for international commercial endeavors. This vessel serves as a versatile platform for various commercial applications, including utility work, environmental or hydrographic surveys, dive support, patrol, crew transport, research operations, or even conversion into a unique private expedition boat.

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