Review of First 25.7

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. 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 38.0 liter fresh water capacity.

The First 25.7 is equipped with 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.

The First 25.7 has been built with different keel alternatives.

Fin keel

One option is 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 boat can enter even shallow marinas as the draft is just about 1.45 - 1.55 meter (4.76 - 5.06 ft) dependent on the load. See immersion rate below.

CentreBoard

Another option is a centreboard keel. A centreboard keel is a pivoting lifting keel, allowing to sail both coastal and inland waters.

First 25.7 can enter even shallow marinas as the draft is just about 0.85 - 0.95 meter (2.79 - 3.09 ft) dependent on the load. See immersion rate below.

The boat may be equipped with an inboard Nanni diesel engine

The fuel tank has a capacity of 30.0 liters (7 US gallons, 6 imperial gallons).

What is Capsize Screening Formula (CSF)?

The capsize screening value for First 25.7 is 2.16, 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 6.6 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 First 25.7 is about 135 kg/cm, alternatively 761 lbs/inch.
Meaning: if you load 135 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 761 lbs cargo on the boat it will sink 1 inch.

What is Motion Comfort Ratio (MCR)?

The Motion Comfort Ratio for First 25.7 is 15.8.

What is L/B (Length Beam Ratio)?

The l/b ratio for First 25.7 is 2.79.

What is a Ballast Ratio?

The ballast ratio for First 25.7 is 28%.

What is Displacement Length Ratio?

The DL-ratio for First 25.7 is 150 which categorizes this boat among 'ultra light racers'.

What is SA/D (Sail Area Displacement ratio)?

The SA/D for First 25.7 with ISO 8666 reference sail is 19.7, with a 135% genua the SA/D is 23.0.

When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 23m² (247 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 fractional 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.

This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.

Do you have changes/improvements you would like to share? Upload a photo and describe what you have done.

We are always looking for new photos. If you can contribute with photos for First 25.7 it would be a great help.

If you have any comments to the review, improvement suggestions, or the like, feel free to contact us. Criticism helps us to improve.