Review of Gambling 34
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.
The boat is equipped with 8 berths, a galley, 90.0 liter fresh water capacity and toilet facility.
The boat has more than one rig.
One option is 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.
Another option is a masthead rig. The advantage of a masthead rig is its simplicity and the fact that a given sail area - compared with a fractional rig - can be carried lower and thus with less heeling moment.
The Gambling 34 has been built with different keel alternatives.
Fin keel
One option is a fin keel. A boat with a fin keel is more manoeuvrable but has less directional stability than a similar boat with a full keel.
The keel is made of iron. Many people prefer lead keel in favour of iron. The main argument is that lead is much heavier than iron and a lead keel can therefore be made smaller which again result in less wet surface, i.e. less drag. In fact iron is quite heavy, just 30% less heavy than lead, so the advantage of a lead keel is often overstated. As the surface of a fin type keel is just a fraction of the total wet surface, the difference between an iron keel and a lead keel can in reality be ignored for cruising yachts.
Gambling 34 can only enter major marinas as the draft is about 1.86 - 1.96 meter (6.10 - 6.40 ft) dependent on the load. See immersion rate below.
Fin keel
Another option is a fin keel. A boat with a fin keel is more manoeuvrable but has less directional stability than a similar boat with a full keel.
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 only enter major marinas as the draft is about 1.80 - 1.90 meter (5.91 - 6.21 ft) dependent on the load. See immersion rate below.
The Gambling 34 has been equipped with different engine alternatives.
Alternative 1:
The boat may be equipped with an inboard yanmar diesel engine at 7 hp (5 kW). Calculated max speed is about 2.9 knots
The transmission is a shaft drive. A shaft drive will in the long run require less maintenance than other types of drive e.g. a sail drive.
Alternative 2:
Gambling 34 may be equipped with an inboard Volvo Penta MB10A diesel engine at 15 hp (11 kW). Calculated max speed is about 4.2 knots
The transmission is a shaft drive. A shaft drive will in the long run require less maintenance than other types of drive e.g. a sail drive.
The fuel tank has a capacity of 50.0 liters (13 US gallons, 10 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 Gambling 34 is 1.80, 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 6.6 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 Gambling 34 is about 156 kg/cm, alternatively 877 lbs/inch.
Meaning: if you load 156 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 877 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 Gambling 34 is 29.4.
What is L/B (Length Beam Ratio)?
The l/b ratio for Gambling 34 is 3.34.
What is Displacement Length Ratio?
The DL-ratio for Gambling 34 is 350 which categorizes this boat among 'heavy cruisers'.
What is SA/D (Sail Area Displacement ratio)?
The SA/D for Gambling 34 with ISO 8666 reference sail is 12.9, with a 135% genua the SA/D is 15.1.
What is Relative Speed Performance?
The Relative Speed Performance for Gambling 34 is 46
Maintenance
When buying anti-fouling bottom paint, it's nice to know how much to buy.
The surface of the wet bottom is about 28m2 (301 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 masthead 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.
| Masthead rig | ||||
| Usage | Length | Diameter | ||
| Mainsail halyard | 29.3 m | (96.1 feet) | 10 mm | (3/8 inch) |
| Jib/genoa halyard | 29.3 m | (96.1 feet) | 10 mm | (3/8 inch) |
| Spinnaker halyard | 29.3 m | (96.1 feet) | 10 mm | (3/8 inch) |
| Jib sheet | 10.4 m | (34.2 feet) | 12 mm | (1/2 inch) |
| Genoa sheet | 10.4 m | (34.2 feet) | 12 mm | (1/2 inch) |
| Mainsheet | 26.1 m | (85.5 feet) | 12 mm | (1/2 inch) |
| Spinnaker sheet | 22.9 m | (75.3 feet) | 12 mm | (1/2 inch) |
| Cunningham | 3.5 m | (11.5 feet) | 10 mm | (3/8 inch) |
| Kickingstrap | 7.0 m | (23.0 feet) | 10 mm | (3/8 inch) |
| Clew-outhaul | 7.0 m | (23.0 feet) | 10 mm | (3/8 inch) |
| Fractional rig | ||||
| Usage | Length | Diameter | ||
| Mainsail halyard | 29.1 m | (95.3 feet) | 10 mm | (3/8 inch) |
| Jib/genoa halyard | 29.1 m | (95.3 feet) | 10 mm | (3/8 inch) |
| Spinnaker halyard | 29.1 m | (95.3 feet) | 10 mm | (3/8 inch) |
| Jib sheet | 10.4 m | (34.2 feet) | 12 mm | (1/2 inch) |
| Genoa sheet | 10.4 m | (34.2 feet) | 12 mm | (1/2 inch) |
| Mainsheet | 26.1 m | (85.5 feet) | 12 mm | (1/2 inch) |
| Spinnaker sheet | 22.9 m | (75.3 feet) | 12 mm | (1/2 inch) |
| Cunningham | 3.5 m | (11.5 feet) | 10 mm | (3/8 inch) |
| Kickingstrap | 7.0 m | (23.0 feet) | 10 mm | (3/8 inch) |
| Clew-outhaul | 7.0 m | (23.0 feet) | 10 mm | (3/8 inch) |
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