LONDON - The UK is sending Royal Navy vessels to bring home travelers stranded by the ash cloud disruption, British Prime Minister Gordon Brown said Monday.

The HMS Ark Royal and HMS Ocean were making their way back to British waters, while the Defense Ministry worked to pinpoint locations that most need help.

Transport across Europe has been crippled since the eruption beneath southern Iceland's Eyjafjallajokull glacier worsened last week, prompting local evacuations and shutting European airspace.

With planes languishing at airports, stranded travelers have crammed onto boats and trains and hired cars in a bid to reach their destination.

"I believe this is one of the most serious transport disruptions we have faced," Brown said. "It's got financial consequences as well as human consequences and we will do everything in our power to make sure all the arrangements are in place to help people where possible to get back home."

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