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Hull

Both the hull and the deck is made of hand laid fibreglass. Generally, a hull made of hand laid 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.

Interior

Floor plan of Sunbeam S 22.

Rig

The boat 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.

Keel

Keel of Sunbeam S 22.

The Sunbeam S 22 has been built with more than one type of 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 1.15 - 1.25 meter (3.77 - 4.07 ft) dependent on the load. See immersion rate below.

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.

Stability and Safety

What is Capsize Screening Formula (CSF)?

The capsize screening value for Sunbeam S 22 is 2.23, indicating that this boat would not be accepted to participate in ocean races.

Theoretical Maximum Hull Speed

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 5.7 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.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level.
The immersion rate for Sunbeam S 22 is about 81 kg/cm, alternatively 455 lbs/inch.

Meaning: if you load 81 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 455 lbs cargo on the boat it will sink 1 inch.

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.

Motion Comfort Ratio

What is Motion Comfort Ratio (MCR)?

The Motion Comfort Ratio for Sunbeam S 22 is 12.1.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Sunbeam S 22 is 3.09.

Ballast Ratio

The ballast ratio for Sunbeam S 22 is 40%.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Sunbeam S 22 is 150 which categorizes this boat among 'ultra light racers'.

SA/D (Sail Area Displacement ratio)

SA/D (Sail Area Displacement ratio)

Indicates how fast the boat is in light wind:

- Cruising Boats have ratios 10-15

- Cruiser-Racers have ratios 16-20

- Racers have ratios above 20

- High-Performance Racers have ratios above 24

Sail-area/displacement ratio (SA/D ratio): 21.04

RSP (Relative Speed Performance)

What is Relative Speed Performance?

The Relative Speed Performance for Sunbeam S 22 is 42

Bottom Paint

When buying anti-fouling bottom paint, it's nice to know how much to buy.
The surface of the wet bottom is about 14m^{2} (150 ft^{2}).

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.

Rig

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 | 6.7 m | (22.0 feet) | 10 mm | (3/8 inch) |

Genoa sheet | 6.7 m | (22.0 feet) | 10 mm | (3/8 inch) |

Mainsheet | 16.8 m | (55.0 feet) | 10 mm | (3/8 inch) |

Spinnaker sheet | 14.7 m | (48.4 feet) | 10 mm | (3/8 inch) |

Boat owner's ideas

This section shown boat owner's changes, improvements, etc. Here you might find inspiration for your boat.

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

Finally

We are always looking for new photos. If you can contribute with photos for Sunbeam S 22 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.

References