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1966 Robert Day Creekmore 36

Listed

Seller's Description

Mandarin, in our family for 30 yrs, beautifully maintained. A real classic sailing yacht and head turner. Built by Robert Day, Middleton RI. Numerous updates, refrig/freezer, bronze self tailing winches, numerous sails, barrier coat bottom, custom mahogany interior. Documented.

Age and health regretfully forces sale

Equipment: GPS, 4 anchors various types, sizes,. 3 spinnakers, pole. Cruising ginneker. 4 headsails, 2 mains, storm sails. Gas cooking, grill. Pressure water. 3 dinghys/6hp outboard. Bronze self tailing winches.(5) refrigeration. Bimini, dodger, full sun cover. Oil heater/fireplace. Barometer/clock/radios/pfds(8)/

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Specs

Designer
Raymond Creekmore
Builder
various
Associations
?
# Built
?
Hull
Monohull
Keel
Stub + Centerboard
Rudder
?
Construction
FG

Dimensions

Length Overall
35 11 / 11 m
Waterline Length
29 11 / 9.1 m
Beam
10 11 / 3.4 m
Draft
4 0 / 1.2 m 4 5 / 1.4 m
Displacement
14,000 lb / 6,350 kg
Ballast
5,000 lb / 2,268 kg (Lead)

Rig and Sails

Type
Sloop
Reported Sail Area
?
Total Sail Area
?
Mainsail
Sail Area
?
P
?
E
?
Air Draft
?
Foresail
Sail Area
?
I
?
J
?
Forestay Length
?

Auxilary Power

Make
?
Model
?
HP
?
Fuel Type
?
Fuel Capacity
?
Engine Hours
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
1

Calculations

Hull Speed
8.3 kn
Classic: 7.34 kn

Hull Speed

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.

Formula

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

8.32 knots
Classic formula: 7.34 knots
Sail Area/Displacement
?

Sail Area / Displacement Ratio

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.

Formula

SA/D = SA ÷ (D ÷ 64)2/3

  • SA: Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
  • D: Displacement in pounds.
?
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
35.7
<40: less stiff, less powerful

Ballast / Displacement Ratio

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.

Formula

Ballast / Displacement * 100

35.72
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
231.8
200-275: moderate

Displacement / Length Ratio

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.

Formula

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

  • D: Displacement of the boat in pounds.
  • LWL: Waterline length in feet
231.77
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
32.9
30-40: moderate bluewater cruising boat

Comfort Ratio

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.

Formula

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)

  • D: Displacement of the boat in pounds
  • LWL: Waterline length in feet
  • LOA: Length overall in feet
  • Beam: Width of boat at the widest point in feet
32.87
<20: lightweight racing boat
20-30: coastal cruiser
30-40: moderate bluewater cruising boat
40-50: heavy bluewater boat
>50: extremely heavy bluewater boat
Capsize Screening
1.6
<2.0: better suited for ocean passages

Capsize Screening Formula

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.

Formula

CSV = Beam ÷ ³√(D / 64)

  • Beam: Width of boat at the widest point in feet
  • D: Displacement of the boat in pounds
1.61
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

The name CREEKMORE 36 loosely describes a small number of hulls, reportedly laid up on a male mold by Ray Creekmore. Some versions had a shallow draft fixed keel. Dimensions are approximate. Also called the CREEKMORE 37 or 38. Probably less than 10 built. Needless to say, dimensions shown here are less than precise.

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