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MV Castor aka Dorothee Bos, Mer Star is a boat accessible salt water dive site, located in Delray, FL. This dive site has an average rating of 5.00 out of 5 from 1 scuba divers. The maximum depth is 101-110ft/31-34m. The average visibility is 81-90ft/25-27m.

26° 28.73898’ N, 80° 2.23398’ W or Lat 26°28.80’N Lon 80°02.20’W.

The M/V Castor was sunk on December 14, 2001. It measures 258 feet long by 37 feet wide by 50 feet tall rising to within 60 feet of the surface. For safety reasons all hatches and doors have been removed making it of easy penetration. The main deck is at 90 feet and the maximum depth of 110 fee where it sits upright with the bow pointing south it is an excellent dive for shipwreck lovers.

The M/V Castor was designed as a dry cargo carrier by the Dutch as a shelterdeck Coaster used for timbers. The ship was built in 1970 at the bodewes shipyard, Martenshoek, Netherlands. Upon its completion in 1970 originally called M/V Dorothee Bos, the ship was used for cargo and supplies until 1988. Under a new name of M/V Mer Star, the captain and the crew embarked from Spain to Mobile, Alabama and remained working within the Caribbean waters for the last twelve years with several different names.

In 1999 the M/V Castor was seized by U.S. Customs agents after being stopped by the Coast Guard carrying 10,127 pounds of cocaine. The captain and crew were arrested and the ship seized. The ship sunk as part of Artificial Reef Program of Palm Beach County.

Story about Goliaths on Castor;

Trip report;


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donburde - 10/18/2018 1:15 PM
I went scuba diving here on 9/23/2018. Average viz: 71-80ft/22-24m. Water temp: 81-85°F/27-29°C.
donburde - 9/24/2018 8:12 AM
I went scuba diving here on 9/23/2018. Average viz: 71-80ft/22-24m. Water temp: 81-85°F/27-29°C.
Great dive. Lots of Goliath grouper hanging around checking us out. Complete part of our AOW. Navigation and S&R