Firm to Pay 15% on Croatian Cruises September 17, 1997 Share 1 -- NEW YORK -- Atlas Travel is offering one-week Croatian cruises that will debut in spring and will be commissionable at 15%. From late April to early October, the 180-foot-long Tropic Sun, with 20 air-conditioned outside cabins, will depart on Saturdays from Split and sail through the Dalmatian Islands to Dubrovnik. The cruise is priced at $998, double. For more information, contact Atlas at (212) 697-6767 or (800) 528-5275; fax (212) 697-7678; e-mail AtlasNY@aol.com. The Atlas Web site is http://www.atlas-croatia.com.