Iran has about 1, 000 fast patrol boats that can offer a new kind of asymmetrical warfare.
Normally, South Korean patrol boats shoo them away, and they return to their home ports.
Added to which, such confrontations -- using artillery and patrol boats -- can be contained and managed.
It is borrowing ships from the navy to cover for the remodelled 123-foot patrol boats that don't float.
An example of this is Japan's intention to supply coastguard patrol boats to the Philippines masquerading as development aid.
This time, they kept returning, shadowed by North Korean navy patrol boats.
For example, the release of video of a Chinese trawler ramming two Japanese patrol boats in September changed the political dynamic in Tokyo.
China recently moved maritime patrol boats into waters near the Senkakus, prompting calls by Japanese coast guard ships for the vessels to leave.
Then on the morning of June 15 a flotilla of four patrol boats and three torpedo boats again entered South Korean waters, says Seoul.
In September, a Chinese trawler rammed two Japanese coast guard patrol boats in the Senkakus, stoking Chinese bluster when the captain justly was arrested.
The latest clash involving Chinese patrol boats occurred 120km (80 miles) off the south-central coast of Vietnam and some 600km south of China's Hainan island.
Vietnam is not the only nation skirmishing with Chinese patrol boats.
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China has said one of its patrol boats acted reasonably in a confrontation with a Vietnamese fishing boat last week in disputed waters in the South China Sea.
Strangers saving strangers, neighbors pulling neighbors out of fast-flooding houses, policemen jumping off their patrol boats and SUVs, the Coast Guard rescuing people off of roofs and cars, buildings and cellars.
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And we have small Coast Guard patrol boats that can actually do scouting, work with the vessels of opportunity, to identify the small patches of oil and deal with it there.
Close the banks for days, ration food and energy, institute strict capital controls - with most probably a few fast patrol boats at Glyfada harbour to check every departing yacht for cash and bonds.
The potential for escalation became clear in early January, when five Iranian patrol boats, believed to be under the command of the Revolutionary Guard, made a series of aggressive moves toward three Navy warships sailing through the Strait of Hormuz.
It has frayed recently over Turkey's reluctance to stop large numbers of Central Asian and Middle Eastern migrants crossing from its Aegean coast to the Greek islands despite the EU's Frontex team of helicopters and patrol boats keeping watch on illegal immigration.
Having dropped (back in 1990) a plan to build the world's biggest ice-breaker, the Canadians may also have to seek Russian help next time they need to carve out a path to the North Pole: even the patrol boats ordered up by Mr Harper this month won't match Russia's leviathans.
The Coast Guard will patrol the river in boats with machine guns mounted on their bows.
Naval boats will patrol access to the port while fighter jets will monitor the skies.
The Mounties, with a patrol fleet of just four boats, are not a big worry on the water.
Sometimes it is necessary for the team to patrol on foot and sometimes they use speed boats on the rivers and canals which criss-cross the park.
They patrol in cars and all-terrain vehicles, on bicycles and horses, in boats, planes and helicopters.
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The U.S. Coast Guard, the Volusia County Beach Patrol and the sheriff's office immediately launched a search-and-rescue mission using helicopters, boats and personal watercraft to try to find the Winter Park, Florida, father and son.
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