Design and Construction
The Sonic 23 was built predominantly of fibreglass, with a deliberate focus on simple, solid fiberglass construction and a measure of wood trim for finish built predominantly of fibreglass. There is no cored hull or deck complexity to worry over; the structure is a straightforward solid layup. At 23 feet overall with a 20-foot waterline, a 7.58-foot beam, and a displacement of 3,400 pounds carrying 1,500 pounds of iron ballast, the boat is compact but reasonably weighted for its length. The fixed fin keel and transom-hung rudder form a conventional underbody for the era, and the pop-up companionway hatch is the one clever accommodation device in an otherwise plain structure.
Rig and Handling
The masthead sloop rig carries an I dimension of 27 feet, J of 10 feet, P of 23 feet, and E of 9.50 feet, supporting a sail plan suited to light trailerable cruising rather than racing ambition. The fin keel with transom-hung rudder gives predictable low-speed manners, and the 3.75-foot maximum draft keeps trailering and shallow anchoring practical. A PHRF racing average handicap of 228 places her among the slower rated pocket cruisers, consistent with a boat built for ease rather than speed.
Accommodations
Below, the Sonic 23 offers basic accommodations for four. The standout feature is a pop-up cabin section that raises headroom to about 6 feet 1 inch, a genuine benefit in a 23-footer where sitting headroom is usually the best one can hope for. The outboard engine well and provisions for an outboard motor reflect the daysailer-cruiser intent, keeping the machinery simple and serviced from the cockpit rather than buried in a confined compartment.
Equipment and Power
The boat is commonly paired with a small motor like a 9.8 hp Tohatsu set into the outboard well, which is enough to stem a current or dock in calm conditions without adding the weight and complexity of an inboard. The pop-up companionway hatch doubles as both an accommodation extender and a ventilation aid when parked.
The Verdict
The Sonic 23 is a no-apologies pocket cruiser: modest in performance, plain in construction, and practical in layout. Its strengths are trailerability, simple solid fiberglass, and a pop-up cabin that makes four-person weekends bearable. Its limits are slow handicap rating, basic fit and finish, and a small rig that will not excite a racer.
Pros
- Simple, solid fiberglass construction with wood trim
- Pop-up cabin section yielding about 6'1" headroom
- Trailerable size with 3.75-foot draft and outboard well
- Basic accommodations for four in a 23-foot hull
Cons
- PHRF average handicap of 228 indicates modest speed
- Basic accommodations and trim, not a refined cruiser
- Out of production since the mid-1980s
