The Dagat - Ocean research vessel and mother ship used by Carter Primus (Robert Brown), a global underwater troubleshooter on the maritime adventure PRIMUS/SYN/1971. Based in Nassau, Carter Primus explored the wonders of the ocean with the help of an arsenal of oceanic equipment: including Pegasus, a small photographic survey submarine; Big Kate, an underwater robot; Tegtight, his base of operations; and Orka, his sea sled/patrol boat.