From Bell Harbor Classic Weekend flyer 2012:

Selkie was built by Grandy Boat Company on Lake Union in Seattle in 1960.  She has just completed a two year restoration, including a total rebuild of her engine, a Chrysler 318, and a new canvas enclosure for the cockpit.  She was refastened in 2009, and all her brightwork was stripped and re-varnished.  Selkie cruises on plane at 16 knots, and has a top speed of 23 knots.  For best fuel economy, she normally cruises around 8 knots.

More about the Grandy Boat Co.: https://classicyachtinfo.org/research/classic-boat-builders-grandy