The Triumph was built in 1999 and isn't covered by the rules, as is the case for most ships among major cruise lines. Experts say the Triumph might have been able to limp into port more quickly if it had the newer systems, but retrofitting is costly and time-consuming.
"Provided the emergency generators worked and had enough power, they would have been able to return to port under their own power, but much slower," said Andrew O. Coggins, Jr., a Pace University management professor who focuses on hospitality and tourism industries.
"Once Carnival has evaluated the full cost of this incident," he added, "it might be cost effective to retrofit their older ships."
Associated Press writers Connie Cass in Washington and Bruce Smith in Charleston, South Carolina, contributed to this report.
On the Internet:
Coast Guard cruise ship inspections database: http://cgmix.uscg.mil/PSIX/PSIXSearch.aspx
CDC Vessel Sanitation Program: http://www.cdc.gov/nceh/vsp/
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