irwin 25 sailboat

IRWIN 25 Detailed Review

If you are a boat enthusiast looking to get more information on specs, built, make, etc. of different boats, then here is a complete review of IRWIN 25. Built by Irwin Yachts and designed by Ted Irwin, the boat was first built in 1969. It has a hull type of Keel/CB & spade rudder and LOA is 7.75. Its sail area/displacement ratio 16.42. Its auxiliary power tank, manufactured by undefined, runs on undefined.

IRWIN 25 has retained its value as a result of superior building, a solid reputation, and a devoted owner base. Read on to find out more about IRWIN 25 and decide if it is a fit for your boating needs.

Boat Information

Boat specifications, sail boat calculation, rig and sail specs, accomodations, contributions, who designed the irwin 25.

IRWIN 25 was designed by Ted Irwin.

Who builds IRWIN 25?

IRWIN 25 is built by Irwin Yachts.

When was IRWIN 25 first built?

IRWIN 25 was first built in 1969.

How long is IRWIN 25?

IRWIN 25 is 6.25 m in length.

What is mast height on IRWIN 25?

IRWIN 25 has a mast height of 8.99 m.

Member Boats at HarborMoor

The Irwin 25 is a 25.25ft masthead sloop designed by Ted Irwin and built in fiberglass by Irwin Yachts between 1969 and 1976.

The Irwin 25 is a moderate weight sailboat which is a reasonably good performer. It is very stable / stiff and has a good righting capability if capsized. It is best suited as a coastal cruiser. There is a very short water supply range.

Irwin 25 for sale elsewhere on the web:

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1974 Irwin 25' Help please

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My husband and I just purchased a 1974 Irwin 25 (first boat ever). Any and all info on this boat would be helpful as the guy we bought it from did not seem to know much about it and he owned it for 5 years. Owners manual would be great as I am having a hard time finding one. Problem #1 Centerboard is in the down position (cable broke) Is there an easy way to fix this? or are there specs on how to do this? having a hard time finding all the info needed for this and yes it is a must fix..where we live the lakes tend to have shallows all over...as we found out this weekend as I was cooking dinner and hubby was driving and I was thrown across the cabin...thanks honey!! Long story short we were stuck there for about 12 hours until one older gentleman in a very beautiful boat came to our rescue. Glad he was the one to stop and not the smaller boats we tried to wave down as even this boat with 2 very large inboards had a bit of trouble getting us out. I have to say we did have a nice night stuck in the lake...lol Problem #2 Water tanks/pumps fresh and waste Where are all of the fill and dump valves located? Problem #3 Wiring; there are loose wires everywhere. is seems that only a few lights are even hooked up. Not sure if the bilge pump is hooked up or not. Anyone have the wiring diagram for this boat? Problem #4 Head is a port a john. Is it possible to actually plumb the head? Problem #5 The so called closet. We want to do away with this closet to make a little more room for my husband to sleep more comfortably. it doesn't seem structual anybody ever taken this closet out? Problem #6 Cushions need recovered (interior and exterior) Anybody found an affordable way to replace the coverings on these cushions? Problem #7 Steering wheel. My husband would rather have a steering wheel to control the boat. Anybody done this on an Irwin 25? most of this is very minor however we plan to spend weekends (overnights) on the boat as a family. When stayed on it this weekend and it was great but...a few of these minor changes would make it so much better. We will be bringing the boat home to work on it this winter. I will be redoing all off the wood work including a new solid wood table top. Very excited to take this very dated boat and make it beautiful again. If you have pics or specs of any upgrades you have done to your Irwin 25 you can send them to mlwadkins@gmail. com Thanks in advance for any advice and help. Melissa  

Irwin Owners Group - Irwin Yachts - he has the manuals - for a price.  

Welcome to Sailnet, Melissa, and congrats on your boat. It would be helpful to other Irwin owners if any pics and suggestions were posted to the forum.  

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• Thread starter JohnMichael
• Start date Feb 1, 2013
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JohnMichael

I am seeking fellow sailors' experiences with the Irwin 25 shoal/centerboard model (not the 10/4 model). I have found information on other Irwin models, but very little on the 25. I want to know about the sailing qualities of the boat, experiences with the operation of the centerboard and structural problems that should be examined closely. The boat will be sailed on Lake Erie.  

just bought one myself. I am also searching for information. will keep you posted if I find anything  

Robincale: Thanks for the reply, I'm still tossing around whether to make the purchase. I look forward to hearing from you.  

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• Sailboat Guide

1975 25.3' Irwin 10/4

• Description

Seller's Description

Classic cruiser with a great look and solid build. Beamy boat with shoal keel plus board. Great for gunk holing the bay’s rivers. The Irwin 10-4 is a hard-to-find boat and this one is in great shape. Well maintained by long-term owner (retired Navy Captain and experienced sailor). Easy to view on land south of Annapolis, Maryland. Launch is paid.

Equipment: Volvo MB10a 15hp gas inboard engine, wheel steering Sails in good condition: Mainsail and roller furling jib, reef points added to Main sailcover, awning, swim ladder, anchor well, lifelines Sleeps 4, 6-foot headroom, stove 2 batteries, alt, nav lights, VHF, compass

Rig and Sails

Auxilary power, accomodations, calculations.

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

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

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.

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 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.

Ballast / Displacement * 100

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.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

• D: Displacement of the boat in pounds.
• LWL: Waterline length in feet

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.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

• D: Displacement of the boat in pounds
• LOA: Length overall in feet
• Beam: Width of boat at the widest point in feet

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.

CSV = Beam ÷ ³√(D / 64)

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Boat with 25 migrants from Haiti interdicted off Florida

A boat carrying 25 migrants from Haiti was recently interdicted by Florida law enforcement, state officials said Friday.

Florida Gov. Ron DeSantis (R) said Florida Fish and Wildlife officers intercepted the vessel “within the last couple of weeks.”

“In their boat, in their vessel, they had firearms, they had drugs, they had night vision gear and were boating very recklessly, which would potentially endanger other folks,” DeSantis said at a press conference.

DeSantis said the boat was interdicted near the Sebastian inlet, and the migrants were turned over to the Coast Guard for deportation.

Florida Fish and Wildlife released a statement acknowledging that officers had intercepted a boat carrying “multiple illegal Haitian immigrants, guns, drugs and night vision equipment” on Feb. 29. After stopping the vessel, officers “immediately” knew they had “intercepted a human smuggling operation,” the agency said.

On Thursday, DeSantis announced Florida would deploy additional law enforcement resources to the southern regions of the state in anticipation of a possible wave of Haitian migrants as the country struggles with street violence and political instability.

The Florida governor, speaking at a press conference, said he signed three bills that target illegal immigration in the state. He also said the state had been looking at boats before the announcement Thursday and law enforcement is going to “continue to do it.”

DeSantis criticized the federal government for failing to take responsibility and said it is “not really” Florida’s responsibility to increase its resources to combat the influx of migrants.

“We’ve got an incredible amount of resources that are now on display,” he said, later adding that the “Coast Guard does by and large a good job but they’re undermanned, they’re under resourced, so we’re filling those gaps.”

DeSantis used the speech to slam President Biden for his border policies, and said migrants from all over the world, as well as Haiti, are going to have an easier time entering the United States by “walking across the border” than anywhere else because they know that “Biden will just let everybody in.”

For the latest news, weather, sports, and streaming video, head to The Hill.