Olympic Adventure 47 Information, Review, Specs

Olympic Adventure 47 Drawing
Make
Olympic
Model
Adventure 47
Builder
Olympic Yachts S.A.
Designer
Ted Brewer
Number Built
Production Year(s)
1974 - ??

The Olympic Adventure 47 represents the pinnacle of the Greek shipbuilding era of the late 1970s and early 1980s, emerging from the Olympic Marine shipyard in Lavrio. Designed by the renowned American naval architect Ted Brewer, this vessel was conceived as a heavy-displacement, blue-water cruiser capable of traversing oceans with a high degree of safety and comfort. It carries the distinct DNA of Brewer’s design philosophy: a robust hull, a protected center cockpit, and a versatile ketch rig that prioritizes manageable sail handling for short-handed crews. While the shipyard produced over 2,000 vessels, the Adventure 47 remains one of its most substantial and enduring offshore designs, often compared to the legendary Whitby 42 but with increased volume and a more refined Mediterranean finish.

Sailing Performance & Handling

The Adventure 47 is a quintessential "heavy-weather" boat, characterized by a high displacement-to-length ratio that provides exceptional stability and a soft motion in a seaway. According to Ted Brewer Yacht Design, the vessel features a long keel with a cutaway forefoot and a protected skeg-hung rudder, a configuration that balances tracking ability with enough maneuverability to handle tight marina quarters.

Under sail, the ketch rig is the most common configuration found on the Adventure 47. This setup allows owners to "split the rigs," keeping the center of effort low by flying a jib and mizzen in heavy air, which reduces heel and weather helm. Owners frequently report that the boat feels "planted" in 20-25 knots of breeze, where lighter contemporary cruisers might feel strained. However, like many heavy cruisers of its era, its light-wind performance is modest; the high wetted surface area of the long keel requires a stiff breeze to get the hull moving efficiently. It is a boat designed for the trade winds rather than drifting in light coastal thermals.

Interior Comfort & Variations

As a center-cockpit cruiser, the Adventure 47 maximizes its 47-foot length to provide an interior layout that was considered cavernous at the time of its launch. The hallmark of the design is the privacy afforded by the "great cabin" located aft, typically accessed via a walkthrough corridor that houses the galley or an auxiliary navigation station. This aft master suite usually features a large double berth and an en-suite head, providing a level of separation from the guest cabins that is highly prized by liveaboard couples.

The main salon is traditionally finished in rich hardwoods—often teak or mahogany—reflecting the high-quality craftsmanship of the Olympic Marine yard during its peak. Variations in the layout exist, with some models configured for three cabins to accommodate charter service in the Greek islands, while others were customized for private owners with a two-cabin "owner’s version" that prioritizes storage and salon space. The shipyard also produced the Olympic Adventure 40, a smaller sibling on a similar design theme, though the 47 offers significantly better headroom (often exceeding 6'4") and a more stable platform for long-term cruising.

The Olympic Adventure 47 has maintained a quiet but respectable cultural footprint within the cruising community. It is frequently cited in offshore cruising guides as a prime example of a "value" blue-water yacht. The model's reputation for durability is often discussed in the context of Mediterranean cruising history, as these boats were staples of the early Aegean charter fleets before the rise of lighter, mass-produced French designs. While it lacks a single high-profile celebrity owner, its legacy is carried by numerous "YouTube sailors" and bloggers who have documented the refitting of these classic hulls for modern circumnavigations, emphasizing their "overbuilt" construction as a primary selling point.

Known Issues & Buyer’s Checklist

Purchasing an Olympic Adventure 47 today requires a discerning eye for the typical aging pains of late-20th-century GRP (glass-reinforced plastic) construction.

  1. Teak Deck Integrity: Many Adventure 47s were delivered with thick teak decks screwed directly into the fiberglass sandwich. Over decades, these screws can allow water to penetrate the balsa or foam core. A percussion test and moisture meter reading are essential to check for deck delamination.
  2. Osmotic Blistering: Early Greek fiberglass work was generally robust, but like many boats from the 1970s and 80s, the hulls are prone to osmosis. Prospective buyers should inspect the hull after it has been hauled out for several hours to see if blisters appear.
  3. Chainplate and Rigging Age: Given the ketch rig’s complexity, the standing rigging involves more wire and terminals than a sloop. The chainplates on these models are often glassed-in or hidden behind cabinetry; they must be inspected for signs of crevice corrosion, especially where they pass through the deck.
  4. Engine Access and Maintenance: While the engine rooms on center-cockpit boats are often large, the original Perkins or Volvo engines may be approaching the end of their service life. Check for signs of "re-powering" and inspect the condition of the fuel tanks, which are often made of mild steel and can rust from the outside in if they have been sitting in bilge water.

Community & Resources

The primary technical resource for owners is the Ted Brewer Yacht Design office, which still provides study plans and technical insights for many of Brewer's classic designs, including the Olympic 47. While no singular "Olympic Marine Owner's Club" exists with a centralized website, there is a strong community of "Brewer Design" enthusiasts who share technical data regarding the hull's specifications and structural nuances.

The Verdict

The Olympic Adventure 47 is a "sailor’s sailboat" for those who value safety and interior volume over racing speed. It remains a formidable choice for those planning extended offshore voyages on a budget.

Pros:

  • Exceptional heavy-weather stability and a comfortable, predictable motion.
  • The center-cockpit design provides a magnificent, private aft master cabin.
  • Highly durable, hand-laid fiberglass hull designed for the rigors of the Mediterranean and beyond.

Cons:

  • Sluggish performance in light winds (under 10 knots).
  • Potential for high maintenance costs related to aged teak decks and complex ketch rigging.
  • The 47-foot length and heavy displacement can make it challenging to handle in tight marinas without a bow thruster.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Fin
Rudder
1x Skeg-Hung
Ballast
14000 lbs
Displacement
32000 lbs
Water Capacity
400 gal
Fuel Capacity
200 gal

Dimensions

Length Overall (LOA)
47 ft
Waterline Length (LWL)
43.33 ft
Beam
14.25 ft
Draft
5.92 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Ketch
P (Main Luff)
47.75 ft
E (Main Foot)
17.66 ft
I (Foretriangle Height)
54 ft
J (Foretriangle Base)
16.83 ft
Forestay Length (est)
56.56 ft
Sail Area
1057 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
16.78
Ballast / Displacement Ratio
43.75
Displacement / Length Ratio (D/L) Ratio
175.6
Comfort Ratio
32.36
Capsize Screening Formula
1.8
Hull Speed
8.82 kn