Seller's Description
27 Helms 1985 Always in Fresh Water, Roller Furling, Yanmar Diesel, Pedestal Steering ALWAYS IN FRESH WATER Basic Boat Info Make: Helms Model: 27 Year: 1985 Condition: Used Category: Sail Builder: Jack A. Helms Co (USA) Designer: Stuart Windley Construction: Fiberglass Boat Hull ID: JAH00570H585 Has Hull ID: Yes Keel Type: Fin Keel Dimensions Length: 27 ft Length Overall: 27 ft Waterline Length: 21’7 ft Beam: 9’7 ft Max Draft: 4’3 ft Bridge Clearance: 38’6 ft Cabin Headroom: 6’2 ft Cabins Count: 2 Engines / Speed Engines: 1 Make: Yanmar Model: 1GM Fuel: Diesel Engine Power: 10hp Type: Inboard Engine Location: Center Year: 1985 Other Heads Count: 1 Boat Class: Cruisers
Equipment: Sails & Rigging Masthead Rig Main w/Mainsail Cover & Large Genoa, New in 2013 Harken Furling System Cabin Top Traveler All Lines Led Aft Wheel Steering Self Tailing Winches/Primary Accommodations Main Salon 6’2” Headroom, Port & Starboard Settee, Galley Aft & Private Head Forward, V Berth Forward Port & Starboard Settees & Convert to Larger Berth Galley Located Aft w/Top Loading Ice Box, Single Stainless Steel Sink, Storage & Alcohol Stove Hanging Locker Forward Starboard Side Private Head w/Porta Potty, Vanity Forward Port Side & Storage Cabin Lighting & Shore Power Flat Screen TV Stereo Deck & Hull Masthead Rig w/Pedestal Steering Harken Roller Furling System Stainless Steel Bow Pulpit & Stern Rail Boarding Ladder Double Lifelines w/Gates Traveler on Cabin Top Cockpit Storage Lockers Anchor Locker on Foredeck Helm Seat 2 - Opening Hatch, Forward Hatch w/Solar Vent Electrical & Electronics 12-Volt DC Electrical System w/Breaker Panel Shore Power System w/Cord Interior Lighting & Navigation Lights VHF Radio Stereo Flat Screen TV Additional Always in Fresh Water Bottom Last Done in 2013 2018 Yanmar Diesel New Lake Water Pump Installed Fuel Separator 2018 Gear Shift Controls & Throttle Installed
Specs
- Designer
- Stuart Windley
- Builder
- Helms - Jack A. Helms Co.
- Associations
- ?
- # Built
- 600
- Hull
- Monohull
- Keel
- Fin
- Rudder
- Spade
- Construction
- FG
Dimensions
- Length Overall
- 26′ 10″ / 8.2 m
- Waterline Length
- 21′ 7″ / 6.6 m
- Beam
- 9′ 8″ / 3 m
- Draft
- 4′ 3″ / 1.3 m
- Displacement
- 6,200 lb / 2,812 kg
- Ballast
- 2,400 lb / 1,089 kg
Rig and Sails
- Type
- Sloop
- Reported Sail Area
- 344′² / 32 m²
- Total Sail Area
- 344′² / 32 m²
Mainsail
- Sail Area
- 147′² / 13.7 m²
- P
- 29′ 5″ / 9 m
- E
- 10′ 0″ / 3.1 m
- Air Draft
- ?
Foresail
- Sail Area
- 197′² / 18.3 m²
- I
- 35′ 0″ / 10.7 m
- J
- 11′ 3″ / 3.4 m
- Forestay Length
- 36′ 9″ / 11.2 m
Auxilary Power
- Make
- ?
- Model
- ?
- HP
- ?
- Fuel Type
- ?
- Fuel Capacity
- ?
- Engine Hours
- ?
Accomodations
- Water Capacity
- ?
- Holding Tank Capacity
- ?
- Headroom
- ?
- Cabins
- 2
Calculations
- Hull Speed
-
6.7 kn
Classic: 6.23 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
- Sail Area/Displacement
-
16.3
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.
- Ballast/Displacement
-
38.7
<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
- Displacement/Length
-
275.1
200-300: 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
- Comfort Ratio
-
20.0
<20: lightweight racing 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
- Capsize Screening
-
2.1
>2.0: better suited for coastal cruising
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
This listing is presented by SailboatListings.com. Visit their website for more information or to contact the seller.
