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Aquarius 21 vs Balboa 24

How do the Aquarius 21 and Balboa 24 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.

Aquarius 21 Aquarius 21 Coastal Recreation · 1969 Balboa 24 Balboa 24 Coastal Recreation · 1981
Aquarius 21Balboa 24
Length overall 21.0 ft6.40 m 23.6 ft7.19 m
Waterline length 18.3 ft5.56 m 20.0 ft6.10 m
Beam 7.8 ft2.38 m 8.3 ft2.54 m
Draft 4.5 ft1.37 m 2.9 ft0.89 m
Displacement 1,900 lb862 kg 2,600 lb1,179 kg
Ballast 665 lb302 kg 900 lb408 kg
Sail area 163 ft²15.1 m² 221 ft²20.5 m²
SA / Displacement 17.00 18.70
Displacement / Length 140 145
Comfort ratio 9.9 11.3
Capsize screening 2.53 2.42
Hull speed (kn) 5.7 6.0

Aquarius 21 vs Balboa 24: the short version

Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.