Carnival Corp. /zigman2/quotes/202325446/composite CCL -1.82% /zigman2/quotes/210414141/delayed UK:CCL -0.62% said Thursday that its Germany-based cruise line AIDA Cruises will resume operations in August, with three ships set to restart sailing. AIDAperla will set sail on Aug 5 from Hamburg, followed by AIDAmar on Aug. 12 from Rostock-Warnemünde and AIDAblue on Aug. 16 from Kiel. Books for the cruises start Thursday. The restart will be the first since operations were paused industry wide in mid-March as a result of the COVID-19 pandemic. Measures the company has introduced in addition to existing health and hygiene standards include a health questionnaire prior to the cruise, temperature measurements before check-in for guests and crew, physical distancing guidelines and closely managing capacities at onboard restaurants, bars, theaters and other venues. Carnival's stock, which slipped 0.2% in premarket trading, has tumbled 69.9% year to date through Wednesday, while the S&P 500 /zigman2/quotes/210599714/realtime SPX -0.46% has slipped 1.9%.