As a former CS employee (tooling, lead hand in deck assembly, mobile service) - these were real popular (still are) boats on Great Lakes, Canadian east & west coasts and we had a dealer network down through to Gulf Coast Florida.
Solid glass hull, balsa cored deck, plywood reinforcing blocks in way of all throughbolt fittings. An inboard deisel at that time was rare in that size. Basically a real simple boat designed by Camper Nicholson of England, based on other CN models with salt water sailing in mind.
Strengths - deep cockpit with bridgedeck, proper icebox, no exterior wood to maintain (tiller is ash), welded bow & stern rails, English built Proctor spars (unless they have been replaced), gel coat used inside all lockers & underside of deck (instead of paint), inboard diesel, transom hung rudder, integrated aluminum toe rail with stanchions, good headroom for size, all factory installed deck fittings bedded in butyl, you can still get CS parts at Holland Marine Holland Marine Products
Weaknesses - no opening ports, history of bottom blisters, dark cove stripe and transom that fades (this one is red, CS did not offer Barney purple), steel fuel tank, 35 year old diesel (get the engine checked by mechanic), original rudder design was not balanced (my first job at the plant was to retrofit customer rudders and install new leading edge to 'semi-balance'). If the forward edge of the rudder is basically straight top to bottom it is older version, if it extends forward about 2" below the skeg shoe it has been retrofitted.
The side decks are narrow to max out interior space, difficult to move fore and aft at rest but the angle is perfect underway and intended to walk on cabin side. Looks like there is some spinnaker fittings on deck also, they were optional, as well as the secondary cockpit winches.
To control costs & maintain quality CS subcontracted interior cabinetry to Craftwood Industries in Toronto, basically cabinets were trimmed and fitted at the plant. This was the time when CS was hiring Raymond Wall from CN and he was designing the 36. Selling boats was not a problem and dealers were ordering for delivery spring the following year. We were completing 100 boats a year and gearing up to produce 50 36's too.
I agree with sailingfool & bl about the price, asking prices on Lakes Ontario & Huron would be double.
Owners association at CS Owners Associations Home Page