Review of Tocas 31

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 hull is a double hull which improves the indoor climate. Especially when the water is colder than the air in the cabin, then the double hull insulates against cold water and reduce the condense water in the cabin.

The boat is equipped with 4 berths, a galley and toilet facility.

The Tocas 31 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 Tocas 31 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 may be equipped with an inboard Volvo Penta MB10A engine at 15 hp (11 kW). Calculated max speed is about 5.2 knots

What is Capsize Screening Formula (CSF)?

The capsize screening value for Tocas 31 is 1.98, 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 Tocas 31 is about 148 kg/cm, alternatively 832 lbs/inch.
Meaning: if you load 148 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 832 lbs cargo on the boat it will sink 1 inch.

What is Motion Comfort Ratio (MCR)?

The Motion Comfort Ratio for Tocas 31 is 21.0.

What is L/B (Length Beam Ratio)?

The l/b ratio for Tocas 31 is 3.20.

What is a Ballast Ratio?

The ballast ratio for Tocas 31 is 47%.

What is Displacement Length Ratio?

The DL-ratio for Tocas 31 is 224 which categorizes this boat among 'light crusers & offshore racers'.

What is Relative Speed Performance?

The Relative Speed Performance for Tocas 31 is 46

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.

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