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Compassion is looking for a new master. She’s ‘jones-ing’ to get back in the water and under sail as we have aged-out in our abilities to liveaboard. The Ingrid 38 is a heavy displacement blue water ketch derived from Colin Archer’s famous double ender designs, inspired by Viking boats renowned for their heavy weather characteristics. “The kind of boat that behaves herself in rough water and can be depended upon to sail herself”… the superb one-finger-on-tiller tracking and a comfortable ride. With her old world style she’s a good looking boat with a sheer line. Her seaworthiness is there to see in her full keel, heavy displacement and overbuilt construction. Her hull is heavily hand laid in fiberglass, there’s robust outboard chainplates and an outboard rudder protected by extra fiberglass and a large bronze shoe casting should she scrub the bottom. Compassion is a traditional sailboat with a tiller and hank-on headsails, cutter and for’sail with 900 sf of sail.
Atkin’s main rework on the Ingrid 38 from Archer’s original design was a finer entry on the bow which ‘cushions’ her landing off the waves. Below the waterline she has a long full keel with deep v-sections forward keeping her stable in the rough. The ballast is encapsulated and is distributed from bow to stern, this helps her to avoid the pitching motion familiar to fin-keel sailors. Rounding this off, there’s plenty of flotation fore and aft which helps keep her dry.(Blue Water Boats)
The tradeoff heavy displacement and ultimate stability is usually in speed, the Ingrid 38 is not considered fast. Surprisingly she’s known to sail pretty well in light airs, owners reporting she’ll do half the wind speed up to 8 knots of wind. However, she’s a boat that comes into her own in heavier seas. By the numbers, her hull speed works out at 7.2 knots but she’ll more often manage a consistent 6 knots while cruising. The ketch rig gives plenty of options on all points of sail and she’s an easy boat to single-hand.(https://bluewaterboats.org/ingrid-38)
Equipment: Please contact us for additional photos and details of recent work and refits. Perkins 4-108 diesel engine Raymarine E80 Radar and GPS VHF AIS Radio Solar Panel Full Sail Inventory Auto Pilot Chart Plotter Depth Indicator Pelagic Tiller Pilot Hasler wind vane Manual windlas Bimini, dodger, weather cloths, hatch covers Dinghy with Nissan 2.5hp 2 stroke Danforth, 35#, 45# CQR anchors 110 V water heater 70 gallon fuel tank 40 gallon drinking water tank Many 5 gallon water containers Deck Grill (propane) Gimble single burner (propane) stove Built-in cooler New foam salon and v-berth upholstery Safety harness, tethers, jack lines, PFDs, MOB beacon, throw ropes, life rings, fire extinguishers Head with sink and shower Plethora of tools & spare parts Portable AC Portable dehumidifier
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)
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