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This Tartan 30 is a beautiful example of classic sailing from the ’70s. Built by Tartan, the hull is solid fiberglass, with a bolted on keel (rust free bolts in a dry bilge), and cored deck (marine ply). She was built to last and is still just as capable of taking you wherever you want to go.
She is powered by the original Atomic-4, gas inboard engine that runs great and has fantastic engine access for maintenance. She features 2 quarter berths, an L-shaped salon to port with the galley to starboard. Forward to port is the head (porta-podi style), with a decent V-berth large enough for one adult or two small children.
The sails are in good shape. The full battened main has 2 reef points. The headsail is hank-on style with a 135 genoa with a reef point at 100, a working jib, and a storm jib. An asymmetrical spinnaker is also included, with bag. all canvas was recently replaced and is in good shape. The decks were painted with Interlux Perfection 3 years ago with Kiwigrip applied for the non-skid. All portholes were rebedded at that time. Life lines are Dyneema and in great shape (no signs of UV damage or chafing). Decks are solid with no known soft spots.
This boat has been in my family for 30 years and has been treated right. We haven’t had her sailing in a couple of years and life is starting to get in the way so it’s time to see her go to someone who will sail her again.
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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