Great choice! Your favorites are temporarily saved for this session. Sign in to save them permanently, access them on any device, and receive relevant alerts.

We will occasionally send you relevant updates. You can opt out or contact us any time.
  • 1 / 27
  • 2 / 27
  • 3 / 27
  • 4 / 27
  • 5 / 27
  • 6 / 27
  • 7 / 27
  • 8 / 27
  • 9 / 27
  • 10 / 27
  • 11 / 27
  • 12 / 27
  • 13 / 27
  • 14 / 27
  • 15 / 27
  • 16 / 27
  • 17 / 27
  • 18 / 27
  • 19 / 27
  • 20 / 27
  • 21 / 27
  • 22 / 27
  • 23 / 27
  • 24 / 27
  • 25 / 27
  • 26 / 27
  • 27 / 27

Seller's Description

1979 Irwin 30 Sailboat, shoal C/B keel. This boat has undergone a serious refit 2 years ago in preparation for island cruising. In 2018 my wife and I spent 3 months cruising the Bahamas, it was a perfect trip aboard a perfect boat! This boat is extremely well equipped with all the standard upgrade items for cruising. To name a few: Dodger/Bimini with rainfly, mainsail stack-pack, roller furling jib, Custom SS dual anchor bow sprit, 200w solar, dinghy davits, SS stern boarding ladder, Yanmar 3GM30F, upgrade 80a alternator, custom built-in refrigeration 4” foam insulation, LED lighting throughout, All lines led to cockpit with new rope clutches, the list goes on…

https://sailboatdata.com/sailboat/irwin-30

Equipment: Sails/Rigging: Full Batten Mainsail (like new) 135% RF Jib (Like new) Symetrical Spinnaker with Snuffer sock & Spin pole (fair condition perfect for cruising) Asym or Drifter with Snuffer sock (older but excellent condition) Furlex Furler Selden Mast & Boom with Jiffy reefing standing rigging Self Tailing 2spd jib sheet winches 2 spd halyard winches

Electronics/Electrical: Garmin 547XS Chartplotter with WiFi, AIS receive, radar ready (network connection to VHF & Autopilot for AIS targets/alarms and auto-route) Garmin BlueChart G2 - US & Bahamas Standard Horizon GX2200 VHF, Shakespear 3’ mastop whip, RG-213 Coax Raymarine ST2000 autopilot Stereo w/bluetooth, cockpit and cabin speakers All new marine grade “tinned” copper wiring throughout All new marine grade electrical components/switches/lighting etc. Dedicated-isolated Start Battery, (1) Grp-24 marine starting Dedicated-isolated House Battery bank, (4) Grp-24 marine deepcycle 200w solar with Renogy controller Small 12v/110VAC inverter to run power tool or charge laptop

Engine: Completely rebuilt & installed 2yrs ago Yanmar 3GM30F PYI dripless shaft seal New Prop Michigan Wheel 12x17P RH 3-blade New AL fuel tank w/electric sending unit Racor Filter Excellent Access through removable engine box, Sound Down marine insulation keeps the engine quiet

Cabin/Galley: All new cushions & covers, V-berth foam is memory foam from and IKEA mattress Main cabin berths have lee cloths Plenty of storage for 3months food/drink provisioning for Bahamas Built-in galley fridge with cold plate, 4 foam insulation, insulated lid with tight gasket seal Force-10 Propane Range with new burners, Magma grill with tank connection 14lb Propane tank, stern rail mounted (lasted more than 3 months cooking aboard almost everyday) 40gal Fresh water tank, pressure water throughout, charcoal filter, cockpit shower 2 folding tables perfect size for cabin or cockpit dinner Manual Head, 8gal holding tank, macerator & deck pump out All through hull fittings & ball valves replaced All hoses replaced 800 GPH auto/manual bilge pump (water witch sensor) Manual Whale bilge pump

Ground Tackle: Primary Bow Anchor = 22lb Lewmar plow, 80’ 5/16” BBB chain & swivel 75’ 1/2” 3-strand nylon rope Secondary Bow Anchor = 25lb Danforth, 60’ 5/16” BBB chain & swivel 75’ 1/2” 3-strand nylon rope Extra shackle for quick easy “Bahamian Moore” system Chain snuber & chafe guards

Dinghy/Outboard/Trailer are available, but not included in the $14,100 price

**Dinghy: Zodiac Fiberglass RHIB 3.1m (with title) Mercury 3hp 2stroke outboard (extremely lightweight)

**Sailboat Trailer: Custom built trailer with adjustable jack stands welded to the trailer frame Tandem 8 lug axles Electric brakes on all 4 wheels All lights work, highway ready, spare tire included

Advertisement

Specs

Designer
Ted Irwin
Builder
Irwin Yachts
Association
Irwin Yacht Owners
# Built
?
Hull
Monohull
Keel
Fin
Rudder
Skeg
Construction
FG

Dimensions

Length Overall
29 11 / 9.1 m
Waterline Length
98 5 / 30 m
Beam
33 5 / 10.2 m
Draft
13 9 / 4.2 m
Displacement
9,200 lb / 4,173 kg
Ballast
4,100 lb / 1,860 kg

Rig and Sails

Type
Sloop
Reported Sail Area
474′² / 44 m²
Total Sail Area
474′² / 44 m²
Mainsail
Sail Area
192′² / 17.9 m²
P
35 0 / 10.7 m
E
10 11 / 3.4 m
Air Draft
45 6 / 13.9 m
Foresail
Sail Area
281′² / 26.1 m²
I
41 8 / 12.7 m
J
13 5 / 4.1 m
Forestay Length
43 9 / 13.4 m

Auxilary Power

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

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
1

Calculations

Hull Speed
8.1 kn
Classic: 6.95 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

8.13 knots
Classic formula: 6.95 knots
Sail Area/Displacement
17.3
16-20: good performance

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.
17.28
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
44.6
>40: stiffer, more 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

44.57
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
210.2
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
210.16
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
23.1
20-30: coastal cruiser

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
23.08
<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
1.9
<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
1.94
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

Shoal draft version: 3.92’.
Keel/CB draft: BU:4.3’ BD: 8.3’

This listing is presented by SailboatListings.com. Visit their website for more information or to contact the seller.

View on SailboatListings.com

Advertisement

Embed

Embed

Embed this page on your own website by copying and pasting this code.

Great choice! Your favorites are temporarily saved for this session. Sign in to save them permanently, access them on any device, and receive relevant alerts.

We will occasionally send you relevant updates. You can opt out or contact us any time.
Measurements:

©2024 Sea Time Tech, LLC

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.