US 21

Main

Appendages
Lifting Keel
Construction
FG
First built hull
1982
Hull type
Monohull
Model
US 21
Sailboat builder
US Yachts - Bayliner
Sailboat designer

Dimensions

Ballast weight
91.0
Beam
2.44
Displacement
771.0
Draft
1.4
Max Draft
1.4
Min Draft
0.38
Overall length
6.48
Waterline length
5.49

Sails

E
2.74
Est. Forestay Length
8.37
Fore area
9.58
I
8.03
J
2.39
Mainsail area
10.87
P
7.92
Total area
20.44

Engine

Performance

Ballast ratio
11.76
Capsize Screening Formula
2.68
Comfort Ratio
8.67
Critical hull speed
5.69
Displacement-length ratio (DLR)
130.13
Upwind sail area to displacement
24.77

Accomodation

The US 21 is a popular sailing boat that was designed by Clark Mills in the 1960s. It is a small, trailerable sailboat that is known for its simplicity and ease of use. Here are some key features and characteristics of the US 21:

1. Size and Dimensions: The US 21 is approximately 21 feet long, with a beam (width) of around 7 feet. It has a shallow draft, typically ranging from 1 to 3 feet, which allows it to sail in shallow waters.

2. Construction: The boat is typically constructed using fiberglass, which makes it lightweight and durable. It has a fixed keel or centerboard, depending on the specific model.

3. Rigging: The US 21 is a sloop-rigged sailboat, meaning it has a single mast and two sails - a mainsail and a jib. The rigging is relatively simple, making it easy for beginners to handle.

4. Cockpit and Cabin: The boat features a spacious cockpit that can comfortably accommodate a small crew. Some models may also have a small cabin with basic amenities like berths, a portable toilet, and storage space.

5. Trailerable: One of the notable advantages of the US 21 is its trailerability. It can be easily transported on a trailer, allowing sailors to explore different sailing locations without the need for a dedicated mooring or slip.

6. Performance: The US 21 is designed to be a versatile and forgiving sailboat, suitable for both beginners and experienced sailors. It offers good stability and maneuverability, making it suitable for day sailing, weekend trips, and even some light racing.

7. Popularity: The US 21 has gained popularity over the years due to its affordability, simplicity, and versatility. It is often considered an excellent entry-level sailboat for those looking to get into sailing or for sailors who prefer a smaller, easily manageable boat.

Overall, the US 21 is a well-regarded sailboat that offers a balance of simplicity, affordability, and performance. Its trailerability and ease of use make it a popular choice among sailors of various skill levels.

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