research vessels  search
RToceanography
 geophysical methods
 geophysical surveys
 Alvin
 submersibles
 FAMOUS
 marine geology
 expeditions
 marine methods
 CYANA
 Deep Sea Drilling Project
 Glomar Challenger
 Ocean Drilling Program
 GEOSECS
 International Decade of Ocean Exploration
 IPOD
SNAdded to Thesaurus in 1983.