Review of Hurley 9.5
Basic specs.
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Both the hull and the deck is made of hand laid fibreglass. Generally, a hull made of hand laid 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 2 cabins, 4 berths, a galley, 273.0 liter fresh water capacity and toilet facility.
The Hurley 9.5 is equipped with a ketch rig. A ketch rig is generally considered easier to handle, because the sails are smaller, and because it can sail on most points to the wind with one sail completely taken down for repair or while reefing. The sail configuration of a ketch allows for better comfort and stability when sailing downwind or on a broad reach.
Full keel
The Hurley 9.5 is equipped with a long keel. A full keel provide a better directional stability than a similar boat with a fin keel; on the other hand, better directional stability means also that the boat is more difficult to handle in a harbour with less space.
The keel is made of lead. Compared with iron, lead has the advantage of being 44% heavier, which allows a smaller keel and hence less water resistance and higher speed.
The boat can enter even shallow marinas as the draft is just about 1.14 - 1.24 meter (3.74 - 4.04 ft) dependent on the load. See immersion rate below.
The Hurley 9.5 has been equipped with different engine alternatives.
Alternative 1:
Hurley 9.5 may be equipped with an inboard Thornycraft diesel engine at 35 hp (26 kW). Calculated max speed is about 6.1 knots
Alternative 2:
The boat may be equipped with an inboard Perkins 4.108 diesel engine at 45 hp (33 kW). Calculated max speed is about 6.9 knots
The fuel tank has a capacity of 273.0 liters (72 US gallons, 60 imperial gallons).
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 Hurley 9.5 is 1.79, indicating that this boat could - if evaluated by this formula alone - 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 6.3 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 Hurley 9.5 is about 142 kg/cm, alternatively 795 lbs/inch.
Meaning: if you load 142 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 795 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 Hurley 9.5 is 33.0.
What is L/B (Length Beam Ratio)?
The l/b ratio for Hurley 9.5 is 3.00.
The ballast ratio for Hurley 9.5 is 39%.
What is Displacement Length Ratio?
The DL-ratio for Hurley 9.5 is 469 which categorizes this boat among 'heavy cruisers'.
SA/D (Sail Area Displacement ratio)
Indicates how fast the boat is in light wind:
- Cruising Boats have ratios 10-15
- Cruiser-Racers have ratios 16-20
- Racers have ratios above 20
- High-Performance Racers have ratios above 24
Sail-area/displacement ratio (SA/D ratio): 11.74
Maintenance
When buying anti-fouling bottom paint, it's nice to know how much to buy.
The surface of the wet bottom is about 22m2 (236 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.
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 | ||
| Jib sheet | 9.3 m | (30.6 feet) | 12 mm | (1/2 inch) |
| Genoa sheet | 9.3 m | (30.6 feet) | 12 mm | (1/2 inch) |
| Mainsheet | 23.4 m | (76.6 feet) | 12 mm | (1/2 inch) |
| Spinnaker sheet | 20.5 m | (67.4 feet) | 12 mm | (1/2 inch) |
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