Great choice! Your favorites are temporarily saved for this session. Sign in to save them permanently, access them on any device, and receive relevant alerts.
Nacra 5.5SL Catamaran, 18’ long, 8’6” wide. This is not a stock 90’s catamaran. It has been upgraded to the latest catamaran standards in performance. If you have ever wanted to get into catamaran sailing but want to have more performance and learn how to sail with a spinnaker this is your cat. Dimensionally 5.5 is the same as the new F18 platforms and a good starter cat to later upgrade if desired. Trailer in good condition with new tires, rebuilt hubs and custom teak cradles. Includes storage box. Always covered when not in use. Only selling because of recent purchase of a Nacra 20. Includes 1 Full trapeze harness, 1 Half trapeze harness, 2 life vests, dagger board storage bag, Rudder storage bags. Upgrades Custom Technora Square top main (Whirlwind Sails) Custom Technora Jib (Whirlwind Sails) Custom Blue Spinnaker (Whirlwind Sails) Original Dacron Jib cut to new self tacking dimensions SNU Mid pole snuffer Self tacking jib New custom boom New trampoline New rigging and trapeze wires New 10:1 Ronstan main blocks All hardware and blocks replaced from original Rudder and Dagger boards in good condition.See below link for her in actionhttps://www.youtube.com/watch?v=AW7fLtDQoNkhttps://www.youtube.com/watch?v=yXYbPGHC-Uc
The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.
Classic hull speed formula:
Hull Speed = 1.34 x √LWL
A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.
Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio.311
Hull Speed = Max Speed/Length ratio x √LWL
A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.
SA/D = SA ÷ (D ÷ 64)2/3
A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.
Ballast / Displacement * 100
A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.
D/L = (D ÷ 2240) ÷ (0.01 x LWL)³
This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.
Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)
This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.
CSV = Beam ÷ ³√(D / 64)
The NACARA 5.5 SLOOP uses the hulls of the NACRA 5.5 18 SQ. METER, with less beam and a sloop rig.
This listing is presented by TheBeachCats.com. Visit their website for more information or to contact the seller.
Great choice! Your favorites are temporarily saved for this session. Sign in to save them permanently, access them on any device, and receive relevant alerts.
©2024 Sea Time Tech, LLC
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
