S/V Betty Jean has been thoroughly loved and enjoyed during our ownership. She is a blast to sail, easy to single hand and just an all around beautiful sailboat. During the past year, she has had many upgrades. Many nights spent out on the hook with the family.
Below is a list of upgrades and maintenance over the past year:
While on the hard -New Ablative bottom paint 7/21 -re-packed stuffing box 7/21 -Sump box installed for fridge and A/c drain. Dry Bilge 7/21 -New vinyl stripes and lettering 7/21 -hull buffed and waxed 7/21 -New bilge switch 7/21
Past Year -Installed teak swim deck. deck is mounted on removeable brackets and is easily removeable -Installed new teak at pulpit -Rebuilt engine control panel in cockpit (new ignition, buzzer, new kill switch and cable, new faceplate) -Installed backing plates to strengthen dinghy davits -New companionway wood and new clear acrylic -rebuilt hatches (sand, paint, gasket, tinted acrylic) -All new ductwork for A/C (works great, even at anchor with generator powering the boat) -Installed new Vizio smart TV -Installed new travelers on main sail -new West Marine 6-1/2” speakers added in cockpit -lubed shift cable and adjusted linkage -cleaned up all electrical wiring with soldered connections and heat shrink tubing for water tight seals
Past Month -Changed oil/filter -changed fuel filter -changed raw water impeller -cleaned raw water strainer -inspected all clamps/hoses -bottom cleaned monthly
Additional info: -Yanmar engine comes with lots of spare parts (filters, alternator, fuel pump, water pump, belts, hoses and gaskets) -All maintenance and equipment manuals are included and have been extremely helpful to have on hand -New LED bulbs for spreader lights (not yet installed) -New LED Masthead fixture (not yet installed) -lots of additional lines -new bumpers 2021 -new dock lines 2021
Equipment: -sails/rigging 2018 -Garmin GPS MAP 702 chart plotter -Raymarine Smart Pilot X-5 auto pilot -Mastervolt Power charger battery -Standard Horizon Matrix GX2200 VHF -West Marine receiver stereo and speakers (2021) -Garmin Wind/Speed -Rule bilge pump -Sump box (a/c, fridge) 2021 -MarineAir a/c -Lifesling -5 life jackets (1 for a canine) -Bruce anchor 33lbs. -flares -horn -dehumidifier -2 burner Force 10 stove/oven -fire extinguisher
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 √LWLA 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)
Thanks to ‘Capt Rob’ for providing correction.
Dimensions from builders brochure.
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