Review of Stor Triss 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 many other boats made of mahogany. Mahogany belongs to the hardwood species, known for being water-repellent and resistant to decay. It has an attractive wood grain and holds wood polish and varnish well.
The boat is equipped with 4 berths and a galley.
The Stor Triss Mk II has been built with different keel alternatives.
DaggerBoard aka Sword
The Stor Triss Mk II is equipped with a daggerboard keel. A daggerboard is a lifting keel that can be lowered and raised, allowing the boat to enter shallow waters as well.
Fin keel
The Stor Triss 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 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.
The boat can enter even shallow marinas as the draft is just about 0.95 - 1.05 meter (3.12 - 3.42 ft) dependent on the load. See immersion rate below.
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 Stor Triss Mk II is 2.41, 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 5.3 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 Stor Triss Mk II is about 62 kg/cm, alternatively 352 lbs/inch.
Meaning: if you load 62 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 352 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 Stor Triss Mk II is 10.1.
What is L/B (Length Beam Ratio)?
The l/b ratio for Stor Triss Mk II is 2.62.
What is Displacement Length Ratio?
The DL-ratio for Stor Triss Mk II is 157 which categorizes this boat among 'light racers'.
Maintenance
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 | 5.2 m | (17.2 feet) | 8 mm | (5/16 inch) |
| Genoa sheet | 5.2 m | (17.2 feet) | 8 mm | (5/16 inch) |
| Mainsheet | 13.1 m | (43.1 feet) | 8 mm | (5/16 inch) |
| Spinnaker sheet | 11.6 m | (37.9 feet) | 8 mm | (5/16 inch) |
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