Review of Nord 80 Mk II
Basic specs.
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The hull 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 interior is like most other boats made of teak. Teak has the advantage of being naturally very oily and therefore water-repellent, which is suitable on boats.
The boat is equipped with 2 cabins, 4 berths, a galley, 65.0 liter fresh water capacity, toilet facility and 20.0 liter waste water capacity.
Note: the boat has also been sold to be self-made/-interiored, which means that the quality of each boat may vary.
The Nord 80 Mk II is equipped with 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.
Fin keel
The Nord 80 Mk II is equipped with a fin keel. The fin keel is the most common keel and provides splendid manoeuvrability. The downside is that it has less directional stability than a long 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.
Nord 80 Mk II can enter even shallow marinas as the draft is just about 1.35 - 1.45 meter (4.43 - 4.73 ft) dependent on the load. See immersion rate below.
The Nord 80 Mk II has been equipped with different engine alternatives.
Alternative 1:
The boat may be equipped with an inboard Volvo Penta MD7B diesel engine at 17 hp (12 kW). Calculated max speed is about 6.0 knots
The transmission is a saildrive.
Note: From 1982.
Alternative 2:
The boat may be equipped with an inboard Volvo Penta MD7A diesel engine at 13 hp (9 kW). Calculated max speed is about 5.2 knots
The transmission is a saildrive.
Note: From 1977.
The fuel tank has a capacity of 42.0 liters (11 US gallons, 9 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 Nord 80 Mk II is 2.07, 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 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 Nord 80 Mk II is about 126 kg/cm, alternatively 708 lbs/inch.
Meaning: if you load 126 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 708 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 Nord 80 Mk II is 19.5.
What is L/B (Length Beam Ratio)?
The l/b ratio for Nord 80 Mk II is 2.83.
The ballast ratio for Nord 80 Mk II is 37%.
What is Displacement Length Ratio?
The DL-ratio for Nord 80 Mk II is 240 which categorizes this boat among 'light crusers & offshore racers'.
What is SA/D (Sail Area Displacement ratio)?
The SA/D for Nord 80 Mk II with ISO 8666 reference sail is 15.9, with a 135% genua the SA/D is 19.1.
What is Relative Speed Performance?
The Relative Speed Performance for Nord 80 Mk II is 50
Maintenance
When buying anti-fouling bottom paint, it's nice to know how much to buy.
The surface of the wet bottom is about 21m2 (226 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.
| Usage | Length | Diameter | ||
| Mainsail halyard | 25.1 m | (82.2 feet) | 8 mm | (5/16 inch) |
| Jib/genoa halyard | 25.1 m | (82.2 feet) | 8 mm | (5/16 inch) |
| Spinnaker halyard | 25.1 m | (82.2 feet) | 8 mm | (5/16 inch) |
| Jib sheet | 8.0 m | (26.2 feet) | 10 mm | (3/8 inch) |
| Genoa sheet | 8.0 m | (26.2 feet) | 10 mm | (3/8 inch) |
| Mainsheet | 20.0 m | (65.5 feet) | 10 mm | (3/8 inch) |
| Spinnaker sheet | 17.6 m | (57.7 feet) | 10 mm | (3/8 inch) |
| Cunningham | 2.6 m | (8.5 feet) | 8 mm | (5/16 inch) |
| Kickingstrap | 5.2 m | (17.1 feet) | 8 mm | (5/16 inch) |
| Clew-outhaul | 5.2 m | (17.1 feet) | 8 mm | (5/16 inch) |
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