Review of Horizon 23
Basic specs.
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Both the hull and the deck is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season. And outside the sailing season, just bottom cleaning and perhaps anti-fouling painting once a year - a few hours of work, that's all.
The boat is equipped with 4 berths and a galley.
The Horizon 23 is equipped with a fractional rig. A fractional rig has smaller headsails which make tacking easier, which is an advantage for cruisers and racers, of course. The downside is that having the wind from behind often requires a gennaker or a spinnaker for optimal speed.
The Horizon 23 has been built with different keel alternatives.
Bilge keel
One option is a bilge keel. A bilge keel is a double keel, which allows the boat to be beached. Bilge keels are the most popular keel for tidal waters.
The boat can enter even shallow marinas as the draft is just about 0.94 - 1.04 meter (3.08 - 3.38 ft) dependent on the load. See immersion rate below.
Wing keel
But be aware that even though a Wing Keel keel is very good for speed racing, a fishing nets and the like in the water can easily make you into a troublesome situation.
Horizon 23 can enter even shallow marinas as the draft is just about 0.94 - 1.04 meter (3.08 - 3.38 ft) dependent on the load. See immersion rate below.
The Horizon 23 has been equipped with different engine alternatives.
Alternative 1:
The boat may be equipped with an inboard Yanmar 1GM10 diesel engine at 9 hp (6 kW). Cruise speed is 4.0 knots. Max speed is 5.0 knots.
Alternative 2:
An outboard motor is often used on this boat. In that case the boat will typically require a power of 2 - 3 hp, alternatively 55 - 66 lbs thrust if you prefer an electrical motor. Electric outboards are becoming popular for sailboat owners who want clean instant power with less noise and no exhaust fumes.
Sailing characteristics
This section covers widely used rules of thumb to describe the sailing characteristics. Please note that even though the calculations are correct, the interpretation of the results might not be valid for extreme boats.
What is Capsize Screening Formula (CSF)?
The capsize screening value for Horizon 23 is 2.43, indicating that this boat would not be accepted to participate in ocean races.
What is Theoretical Maximum Hull Speed?
The theoretical maximal speed of a displacement boat of this length is 5.7 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.
The immersion rate is defined as the weight required to sink the boat a certain level.
The immersion rate for Horizon 23 is about 96 kg/cm, alternatively 538 lbs/inch.
Meaning: if you load 96 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 538 lbs cargo on the boat it will sink 1 inch.
Sailing statistics
This section is statistical comparison with similar boats of the same category. The basis of the following statistical computations is our unique database with more than 26,000 different boat types and 350,000 data points.
What is Motion Comfort Ratio (MCR)?
The Motion Comfort Ratio for Horizon 23 is 12.5.
What is L/B (Length Beam Ratio)?
The l/b ratio for Horizon 23 is 2.68.
The ballast ratio for Horizon 23 is 52%.
What is Displacement Length Ratio?
The DL-ratio for Horizon 23 is 204 which categorizes this boat among 'light crusers & offshore racers'.
What is SA/D (Sail Area Displacement ratio)?
The SA/D for Horizon 23 with ISO 8666 reference sail is 17.6, with a 135% genua the SA/D is 20.4.
Maintenance
When buying anti-fouling bottom paint, it's nice to know how much to buy.
The surface of the wet bottom is about 15m2 (161 ft2).
Based on this, your favourite maritime shop can tell you the quantity you need.
Note: If you use a paint roller you will need more paint than if you use a paintbrush.
Dimensions of sail for fractional rig.
Are your sails worn out? You might find your next sail here: Sails for Sale
If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.
| Usage | Length | Diameter | ||
| Mainsail halyard | 20.9 m | (68.5 feet) | 8 mm | (5/16 inch) |
| Jib/genoa halyard | 20.9 m | (68.5 feet) | 8 mm | (5/16 inch) |
| Spinnaker halyard | 20.9 m | (68.5 feet) | 8 mm | (5/16 inch) |
| Jib sheet | 6.9 m | (22.7 feet) | 10 mm | (3/8 inch) |
| Genoa sheet | 6.9 m | (22.7 feet) | 10 mm | (3/8 inch) |
| Mainsheet | 17.3 m | (56.8 feet) | 10 mm | (3/8 inch) |
| Spinnaker sheet | 15.2 m | (50.0 feet) | 10 mm | (3/8 inch) |
| Cunningham | 2.7 m | (9.0 feet) | 8 mm | (5/16 inch) |
| Kickingstrap | 5.5 m | (18.0 feet) | 8 mm | (5/16 inch) |
| Clew-outhaul | 5.5 m | (18.0 feet) | 8 mm | (5/16 inch) |
This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.
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