A modern Dog Boat design sketch

How could a modern Dog Boat be armed and designed?

A possible design is a fast, modular 250- to 300-ton craft with a medium gun, naval strike missiles, possible surface-to-air weapons, useful range at about 40 knots, and some stealth shaping.

The Danish StanFlex system provides a model for changing equipment without rebuilding the ship. A rough design displaces 250 to 300 tons, carries a 40- or 57-millimeter gun and Naval Strike Missiles, and adds a surface-to-air weapon if weight allows. Forty-knot performance and useful range at that speed would let the craft enter and leave danger quickly. A later comparison favors the Visby class as a stealth-shaped model and notes its 57 mm gun, eight RBS-15 Mark 2 anti-ship missiles, four torpedo launchers, and twelve originally planned surface-to-air missiles. This remains a force-design thought experiment rather than a literal recreation of a wartime boat.