The U.S. is not ready to handle an oil spill if drilling off the Cuban coast goes awry but can be better prepared with monitoring systems and other basic steps, experts told government officials Monday.

The comments at a congressional subcommittee hearing in the Miami Beach suburb of Sunny Isles come more than a week after a huge oil rig arrived in Cuban waters to begin drilling a deepwater exploratory well.

Similar development is expected off the Bahamas next year, but decades of tense relations between the U.S. and Cuba makes cooperation in protecting the Florida Straits particularly tricky. With memories of the Deepwater Horizon spill in the Gulf of Mexico still fresh, state and federal officials fear even the perception of oil flowing toward Florida beaches could devastate an economy that claims about $57 billion from tourism.

Florida International University Professor John Proni told officials to be proactive. He is leading a consortium of researchers on U.S. readiness to handle a spill.

"For the last few years, my colleagues and I have been visiting Washington to say the best time to start preparing for an oil spell is before it happens," Proni told leaders of the House Transportation and Infrastructure Committee, in a hotel-turned-hearing room overlooking the turquoise waters the group convened to protect. Proni said he has seen little action from officials in Washington, though they responded positively.

U.S. officials have turned their attention to preventing future spills since the Deepwater Horizon rig leased by BP blew up in April 2010, causing the well to blow out and unleashing millions of gallons of oil in the Gulf of Mexico. Crude washed up on pristine shoreline, soiled wildlife and left a region dependent on tourist dollars scrambling to rebuild its image.

Coast Guard officials said Monday they did not know if Cuba had started drilling. Experts testified current estimates have surface oil from a spill moving as quickly as 3 miles an hour due to the Gulfstream, but that the fast-moving current would make it difficult for the oil to quickly cross the Florida Straits.

Rear Adm. William Baumgartner, commander of the Coast Guard region that covers the Florida Straits, said a likely scenario would have the oil spreading and reaching U.S. waters in six to 10 days.

Proni said that lack of specificity is the problem. He wants a system that can monitor changes in underwater sounds to immediately alert U.S. officials to a spill or other unusual activity. He also wants the U.S. to invest in developing better computer models to predict oil movement and to do an assessment of the existing ecosystem and the type of oil Cuba possesses. That way, experts can better pinpoint any damage and find out if it came from Cuban wells.

Proni said the fast-moving water would make it difficult to burn the oil or strain it, as was done to halt the spread of the Deepwater Horizon spill. He added that more research is needed on the risks of using chemicals that break down the oil into tiny droplets.

Baumgartner said his agency has been working to develop a response plan. The Coast Guard and private response teams have been granted the required visas under the U.S. embargo to work with the Cuban government and its partners should a problem arise. Since March 2011, the agency has been working with Repsol RDF, the Spanish company leasing the rig off Cuba, and inspected the rig earlier this month.

The rig was given a good bill of health. Asked Monday about the rig's readiness, though, Baumgartner said inspectors found some minor problems with the safety systems that would have kept the ship from being allowed to drill in U.S. waters. He said it was unclear whether the required repairs had been made.

U.S. Rep. Mario Diaz-Balart, one of three South Florida Cuban-American lawmakers who attended the hearing, said he hopes the Obama administration will quickly respond to the consortium's concerns. He added that Proni's proposals could be applied to the Gulf of Mexico, where many more rigs are already drilling for oil in U.S. waters.

Meanwhile, U.S. Rep. Ileana Ros-Lehtinen, has authored a bill that would sanction those who help Cuba develop its oil reserves.

"We can't stop Repsol from drilling now, but we can act to deter future leaders to avoid the Castro brothers becoming the oil tycoons of the Caribbean," she told the committee.

Fellow South Floridian U.S. Rep. David Rivera is proposing to expand the 1990 Oil Pollution Act to fully cover companies operating outside U.S. waters, in the event oil reaches U.S. territory. The 1990 law requires oil companies to repay government agencies for any cleanup costs for spills; it also requires that companies have plans for preventing and cleaning up spills.

But Chairman John Micah, R-Fla., questioned whether the U.S. could enforce any law outside its own waters.