CSY 505 Information, Review, Specs

Sailing Performance & Handling

The CSY 505's performance profile is a significant departure from the earlier "Walk-through" and "Walk-over" models. With a reported Displacement/Length (D/L) ratio of approximately 186, it sits firmly in the "moderate" category, contrasting sharply with the CSY 44, which often exceeded a D/L of 300. This lower ratio, combined with a Charles Morgan-designed hull, makes the boat significantly more responsive in light air and capable of higher average cruising speeds.

Handling is anchored by a long keel, which provides exceptional directional stability and a smooth, "train-on-tracks" feel during long offshore passages. However, the trade-off for this tracking ability is a larger turning radius and more challenging maneuvering in tight marinas, particularly when reversing. While technical data suggests a theoretical hull speed of roughly 8.7 knots, owner anecdotes regarding its Charles Morgan cousins suggest a boat that remains stiff and predictable even when pressed in heavy weather. Unlike the earlier cutters, the 505's masthead sloop configuration is simpler to tune but requires a powerful primary winch setup to manage its large overlapping genoas.

Interior Comfort & Variations

With a length over 50 feet and a generous 15.25-foot beam, the 505 offers an immense amount of internal volume, a hallmark that CSY maintained even as hull shapes evolved. The interior is typically laid out to accommodate the high-end private owner rather than the high-density charter trade. Most configurations feature a large center cockpit that allows for a massive, full-beam aft master stateroom with a private head and standing headroom throughout.

The woodwork in these later models often reflects a shift toward more refined joinery compared to the utilitarian "charter-grade" finishes of the late 70s. Variations on this hull include sibling designs such as the CSY 50 (a Peter Schmitt ketch) and the Morgan 50, which shares significant DNA with the 505 due to Charles Morgan’s involvement. In the 505, the galley is typically located in the walkthrough to the aft cabin, providing a secure place to brace while cooking at sea, a feature highly regarded by long-distance voyagers.

Known Issues & Buyer’s Checklist

Prospective buyers of a CSY 505 should focus their inspections on the unique transition period in which these boats were built.

• Fuel and Water Tanks: Earlier CSY models were notorious for using black iron fuel tanks that suffered from top-down corrosion. While later models like the 505 may have switched to aluminum or fiberglass, it is critical to verify the material and the integrity of the baffles and deck fills.
• Deck Core Integrity: While CSY was known for solid fiberglass hulls below the waterline, the decks were typically balsa-cored. Buyers should use a moisture meter around stanchions, chainplates, and the windlass, as these high-load areas are prone to water ingress.
• Rigging and Chainplates: Given the age and the 50-foot sail plan, the massive chainplates should be pulled and inspected for crevice corrosion. These components are often "over-engineered" on CSY boats, but decades in a salt-air environment can still lead to failure at the deck transition.
• Gate Valves: Many CSY-built boats originally utilized gate valves instead of proper marine seacocks. Any remaining gate valves should be replaced immediately with bronze or Marelon ball valves to meet modern safety standards.

Community & Resources

The primary repository for technical knowledge and historical documentation for this model is the CSY Owners Association. This group maintains a comprehensive technical wiki known as the "CSY Guide," which includes original brochures, engineering diagrams, and maintenance logs specifically for the 505 and its siblings. While the 505 is a rare model, the community around the builder remains one of the most dedicated in the cruising world, offering deep insights into the Charles Morgan era of production.

The Verdict

The CSY 505 is an intriguing hybrid: it possesses the rugged "go-anywhere" soul of a classic Caribbean cruiser but features the faster, more modern lines of a Charles Morgan design.

Pros

• Exceptional interior volume and "live-aboard" comfort.
• Modern hull ratios provide better performance than older CSY "tanks."
• Extreme structural durability and solid fiberglass hull construction.
• Excellent tracking and sea-kindliness provided by the long keel.

Cons

• Rare model with limited production numbers, making parts-matching difficult.
• Large sail plan can be physically demanding for a short-handed crew.
• Maneuverability in reverse is hampered by the long keel design.
• Potential for legacy plumbing and tankage issues common to the era.