1966 O'Day Sailboats Brochure
This O'Day Fiberglass Sailboats brochure, most likely from 1966, features the Day Sailer, Rhodes 19, Mariner, Tempest, Ospray, Javelin, Widgeon, Sprite, Seven-Eleven, Swift and Super Swift.
The information for the Mariner seems to focus on the compact cruiser capabilities, emphasizing the overnight accommodations. The woman featured in the pictures below is most likely the same woman featured in O'Day's other Fiberglass Sailboats brochure from 1964.