Marcon International, Inc. of Coupeville, Washington announced the sale of the U.S. flag oilfield supply boat "Orion Pioneer" (ex-Orion Star, Acoustic Pioneer, September Morn) from WesternGeco Overseas Inc. to private buyers. The vessel was originally built in 1981 by Halter Marine, Inc. as a standard design 180' x 40' x 14' depth supply vessel for Levy-Mellon Marine of Patterson, Louisiana to use in the Gulf of Mexico market. She was later modified for specialized acoustic work for the U.S. Government Naval Sea Systems Command with conversion of port and starboard No.