Review of Sea Maid 45
Basic specs.
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The Sea Maid 45 is equipped with a long keel. A long keel provide a better directional stability than a similar boat with a fin keel; on the other hand, better directional stability means also that the boat is more difficult to handle in a harbour with less space.
The boat is typically equipped with an inboard Cummins diesel engine.
The fuel tank has a capacity of 568.0 liters (150 US gallons, 124 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 Sea Maid 45 is 1.70, 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 8.4 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 Sea Maid 45 is about 327 kg/cm, alternatively 1833 lbs/inch.
Meaning: if you load 327 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 1833 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 Sea Maid 45 is 36.7.
What is L/B (Length Beam Ratio)?
The l/b ratio for Sea Maid 45 is 3.39.
The ballast ratio for Sea Maid 45 is 34%.
What is Displacement Length Ratio?
The DL-ratio for Sea Maid 45 is 224 which categorizes this boat among 'light crusers & offshore 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 | 13.8 m | (45.2 feet) | 16 mm | (5/8 inch) |
| Genoa sheet | 13.8 m | (45.2 feet) | 16 mm | (5/8 inch) |
| Mainsheet | 34.4 m | (112.9 feet) | 16 mm | (5/8 inch) |
| Spinnaker sheet | 30.3 m | (99.4 feet) | 16 mm | (5/8 inch) |
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