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28 boats
- Recommended
- Recently Updated: Newest first
- Recently Updated: Oldest first
- Distance: Nearest first
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- Year: Oldest first
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- Price: High to Low
- Price: Low to High
- 2012 Flats Cat 21$27,500, Rockport, TX 78382
- 2003 Flats Cat 21$22,995, Marrero, LA 70072
- 2003 Flats Cat 21$19,995, Marrero, LA 70072
- 2021 Hewes Redfisher 21$74,000, Lake Worth, FL 33460
- 2026 Shoalwater 21' Catamaran$71,995, Corpus Christi, TX 78412
- 2026 Shoalwater 21' Catamaran$76,771, Conroe, TX 77301
- 2026 Shoalwater 21' Catamaran$82,313, Corpus Christi, TX 78501
- 2021 Shallow Sport 21 Sport$72,900, Corpus Christi, TX 78418
- 2026 Shoalwater 21' Catamaran$71,995, Conroe, TX 77301
- 2026 Shoalwater 21' Catamaran$71,995, Conroe, TX 77301
- 2026 Avid 21 ReconRequest a Price, Corpus Christi, TX 78418
- 2027 Hewes Redfisher 21Request a Price, Port Charlotte, FL 33953
- 2027 Hewes Redfisher 21Request a Price, Placida, FL 33946
- 2021 Hewes Redfisher 21$74,900, Palm Coast, FL 32137
- 2026 Hewes Redfisher 21Request a Price, US
- 2026 Shoalwater 21' Catamaran$82,313, Corpus Christi, TX 78412
- 2027 Hewes Redfisher 21$133,990, Clermont, FL 34711
- 2018 Shallow Sport 21 Sport$55,000, Canyon Lake, TX 78133
- 2026 Shoalwater 21' Catamaran$71,995, Corpus Christi, TX 78412
- 2026 Shoalwater 21' Catamaran$71,995, Beaumont, TX 77707
- 2012 Yellowfin 21 Hybrid$83,000, Tarpon Springs, FL 34689
- 1999 Majek 21 Redfish$45,900, Trenton, FL 32693
- 2027 Hewes Redfisher 21Request a Price, Longboat Key, FL 34228
- 2026 Shoalwater 21' Catamaran$71,995, Corpus Christi, TX 78501
- 2026 Shoalwater 21' Catamaran$71,995, Corpus Christi, TX 78501
- 2026 Shoalwater 21' Catamaran$76,771, Aransas, TX 78336
- 2026 Shoalwater 21' Catamaran$76,771, Beaumont, TX 77707
- 2026 Hewes Redfisher 21$118,977, Tampa, FL 33634
Flats Cat 21
A powerboat built by Flats Cat, the 21 is a flats vessel. Flats Cat 21 boats are typically used for other.
Got a specific Flats Cat 21 in mind?
There are currently 28 listings available on Boat Trader by both private sellers and professional boat dealers. The oldest boat was built in 2003 and the newest model is 2012. The starting price is $19,995, the most expensive is $27,500, and the average price of $22,995. Related boats include the following models: 19 and 19/FO.
Boat Trader works with thousands of boat dealers and brokers to bring you one of the largest collections of Flats Cat 21 boats on the market. You can also browse boat dealers to find a boat near you today.