The goal of the deep-sea sediment coring project is to help determine age and development of ocean basins by drilling deep holes in the floor. Cores are collected and in-hole measurements of physical properties are made. Planned cruises are: Orange, Tex. to New York; New York to Dakar, Senegal; Dakar to Rio de Janeiro; Rio de Janeiro to Panama; Panama to Hawaii; Hawaii to Guam, southern route; Guam to Hawaii, northern route; Hawaii to Tahiti; and Tahiti across the East Pacific Rise. Seismic and magnetometer surveys will be carried out also. Leg 1 has been completed and a table of data on the holes drilled is included. Methods of core study are given. Caprock overlain by Miocene sediments was recovered on a Sigsbee Knoll, and Cretaceous sediments were recovered east of San Salvador.