The Seafarer 23 Challenger is an American trailerable sailboat that was designed by McCurdy & Rhodes as a cruiser and first built in 1978.^[1][2][3]

The design is sometimes confused with the similarly named Seafarer 23 and the Seafarer 23 Kestrel.^[1][3]

The design was built by Seafarer Yachts, from 1978 until 1984 in the United States, but it is now out of production.^[1][3][4][5]

The Seafarer 23 Challenger is a recreational keelboat, built predominantly of fiberglass, with wood trim. It has a masthead sloop rig, a raked stem, a slightly reverse transom, a skeg-mounted rudder controlled by a tiller and a fixed fin keel or optional shoal-draft keel. It displaces 2,550 lb (1,157 kg) and carries 1,020 lb (463 kg) of lead ballast.^[1][3]

The boat has a draft of 3.25 ft (0.99 m) with the standard keel and 2.33 ft (0.71 m) with the optional shoal draft keel. The boat is normally fitted with a small outboard motor for docking and maneuvering.^[1][3]

The design has sleeping accommodation for five people, with a double "V"-berth in the bow cabin, a straight settee in the main cabin on the port side and slides out to form a double berth and a single berth on the starboard side. The galley is located under the companionway ladder. The galley is equipped with a two-burner stove and a sink. The enclosed head is located just aft of the bow cabin on the port side, or optionally in the bow cabin, under the "V"-berth, to give more room in the main cabin.^[1][3]

The design has a hull speed of 5.76 kn (10.67 km/h).^[3]

• List of sailing boat types