The Beneteau Cyclades 50.5 Sailboat
Specs & Key Performance Indicators

Published Specification for the Beneteau Cyclades 50.5

Underwater Profile: Bulb fin keel & spade rudder

Hull Material: GRP (Fibreglass)

Length Overall: 51'4" (15.7m)

Waterline Length: 43'3" (13.2m)

Beam: 16'1" (4.9m)

Draft: 6'7" (2.0m)

Rig Type: Masthead sloop

Displacement: 27,954lb (12,680kg)

Designer: Berret-Racoupeau Yacht Design

Builder: Beneteau (France)

Year First Built: 2008

Year Last Built: 2010

The Beneteau Cyclades 50.5 was primarily designed as a cruiser for the yacht charter market. It featured a spacious and modern interior with five cabins, making it ideal for family or group vacations.

The only alternative version of the Beneteau Cyclades 50.5 that was built is the Cyclades 50.4. The 50.4 shares the same external design as the 50.5 but differs in its interior layout. Instead of five double cabins, the 50.4 has four double cabins and one twin cabin. Additionally, the 50.4 includes a fourth head aft to port, replacing the crew cabin found in the 50.5.

Published Design Ratios for the Beneteau Cyclades 50.5 Sailboat

• With a Sail Area/Displacement Ratio of 18.6, this sailboat falls into the range indicating reasonably good performance capability, balancing power and weight effectively.

• Its Ballast/Displacement Ratio of 31.2 suggests moderate stiffness, but this figure alone may be misleading without considering the ballast's location, such as whether it's in a shallow keel or a deeper bulb keel.

• The boat’s Displacement/Length Ratio of 154 categorizes it as a light displacement vessel, implying it requires relatively less sail area to reach its design hull speed.

• Ted Brewer’s Comfort Ratio for the Cyclades 50.5 is 23.4, pointing to motion characteristics typical of a coastal cruiser with moderate stability. However, it's important to note that this ratio tends to favor heavier, narrower boats with long overhangs, thus not perfectly representing modern light-displacement, beamy designs.

• Lastly, the boat's Capsize Screening Formula value of 2.1 is slightly above the traditional threshold for bluewater capability, indicating it is more suited for coastal cruising rather than extensive ocean passages.

Overall, while these ratios offer insight into the theoretical performance and comfort of the Cyclades 50.5, they have limitations—most notably the Ballast/Displacement Ratio which does not consider ballast positioning, and the Comfort Ratio which may underrepresent modern boat designs.