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.: http://classicyacht.org/research/classic-boat-builders-grandy