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Zephyr Zen is a high performance model with a few add ons for racing. One of the additional options are jib tracks that are adjustable under load with lines from the cockpit. This tweaking of the jib sheeting angle can be used to get the proper jib shape when reefing the jib by moving the car forward without having to luff the sail, test, luff and test until the right shape is acquired. There is also a downhaul guy for a spinnaker installed with a line led back to the cockpit. This rig is set up with a rigid vang used to improve sail shape but also to support the boom from falling should the topping lift break. The prop has also been changed out with a folding prop for additional sailing efficiency and to avoid wrapping the prop in crab trap lines. Features common with the production36 MKII vessels include: Windless with under-deck storage locker that opens for cleaning and a drain to the sea for water coming off the chain or line when stowed. Wire exposed life lines for easy inspection to ensure no corrosion goes undetected for confidence it will keep sailors aboard when relied upon. Dodger with Isinglass windows for good visibility and an opening center section for fresh air when conditions are kindly Cockpit Bimini for protection from the sun and comfortable sailing. Large wheel to allow seating on the sides for visibility of the jib sail as well as fine adjustments to course. Full instrument cluster at the helm with Garmin Depth, speed, wind angle and speed, Ray Marine auto pilot control and a Garmin GPS Map and a large lighted compass. The autopilot is under deck which is well protected from the sun and water while operating much quieter than the wheel integrated versions. The instrument cluster for the Engine is located below the wheel at the helm to read temperature, oil pressure, RPM, etc as well as starting and stopping the engine.
Equipment: The cockpit has a removable help seat to allow access to the swim platform. The floor is open to allow water to drain quickly out toward the swim platform in the event of a wave landing in the cockpit which I have not experienced, but appreciate should it ever happen. The swim platform is a great safety aspect when presented with a man overboard situation where giving support to the swimmer is much easier than raised cockpits. This is also extremely handy when bringing people and supplies aboard from a dinghy. There are a set of davits for a dinghy that house a couple of solar panels that keep the batteries up without needing shore power. There is also an engine hoist for lifting an outboard from the dinghy as well as an Edson mount on the rail to store the outboard. All hand grips are stainless steel for reduced maintenance under the sun and elements. There are hand grips on the deck along the top of the saloon as well as those on the dodger for a good grip when moving forward. The motor is a Universal that is original to the boat. It has excellent access although front access requires the steps and a cover be moved. Once opened up though all points of the motor are easily accessible. The stuffing box aft of the transmission on the shaft is also easily accessed from the rear cabin. There is no need to be a contortionist and climb under or behind some bulkhead to service. There is a water separator and separate engine oil filter for ensuring the fuel is clean that is accessed in that same area. The engine is started off a single Relion Lithium Phosphate bank of two batteries (also the house bank). There is a battery switch that can be used to separate them if desired. There is also a battery monitor to see the state of charge and the solar charge controller is a Victron with bluetooth monitoring so you can check the status and history via a smart phone app. There is also an extra raw water pump that is an upgrade from the original. The upgrade allows the impeller to be replaced without disconnecting the water jacket in the original layout. This adaptation is designed for this motor. There is a VHF radio with DSC for emergency location broadcast and AIS receiver built in for alarms. The electronics for speed, wind, depth, and AIS etc are connected via a NMEA2000 with the help of the Garmin Chart Plotter where necessary. There is also a radar unit connected to the back stay to avoid fouling the jib when tacking. There are 3 sails that include the main, jib and genoa. The head sails are both roller furling and the main is adapted for the Dutchman reefing system. There is a sail cover with cutouts to accommodate the dutchman lines and together they allow for controlled dropping of the main sail. The main has two reefing points with lines led to the cockpit for reefing from a safer/dryer location. There is an adjustable outhaul that is also led back to the cockpit as well. There is an adjustable pole for downwind work that is mounted to the front of the mast with control lines to easily drop it into place for use and retract it back out of the way when finished. The interior layout includes an open plan with an L shaped galley. The galley includes a top loading refrigeration compartment, gimballed propane stove and oven, microwave, with cabinets and a top loading storage locker for bulk dry food storage. Call for more details.
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)
Same hull and rig as the earlier version introduced in 1982 but with a larger cockpit and updated deck and interior. (Replaced with the CATALINA 375 in 2008)
Also available with a shallower draft wing keel and tall rig.
Wing keel draft: 4.52’/1.38m.
Dimensions for tall rig:
I: 46.75’/14.25m
J: 14.33’/4.37m
P: 41.0’/12.5m
E: 13.0’/3.96m
This listing is presented by SailboatListings.com. Visit their website for more information or to contact the seller.
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