The million-dollar pirates

Who is attacking whom?

Pirates from Somalia have attacked at least 61 ships this year alone. It's the biggest surge of piracy in modern times, and has turned the Gulf of Aden - the vital link connecting the Suez Canal and Red Sea to the Indian Ocean, through which 20,000 ships pass each year - into the world's most dangerous waterway. Last week a Ukrainian ship carrying 33 Russian-made tanks, weapons and ammo (for which the kidnappers initially demanded an £11m ransom) was seized, and is now encircled by US navy craft. Somali pirates currently hold at least 12 foreign ships and more than 200 crew members. As a result, insurance premiums have soared; it now costs $9,000 to send a cargo through the Gulf, up from $900 a year ago. Ship owners say they may have to reroute their vessels around Africa, massively increasing costs.

Just who are these pirates?

In the early 1990s many Somali fishermen became incensed by the foreign vessels trawling Somali waters. They would board foreign boats close to shore and demand their share of the catch. It did not take long for them to realise that there was more money to be made by hijacking boats and holding the crews for ransom. Three years ago there were only about a hundred pirates. Today there are thought to be as many as 1,200. Most are based in Puntland, a semi-autonomous region on the Horn of Africa. The pirate hub is the Puntland fishing village of Eyl, now a boom town, where pirates buy luxury 4x4s and build smart new homes, men with laptops calling themselves "pirate accountants" come and go, and restaurants catering for the captured crews have newly opened.

And how exactly do the pirates work?

They usually operate from "mother ships", large fishing boats (often requisitioned) which act as launch-pads for small, fast speedboats carrying pirates toting AK-47s, rocket-propelled grenades and scaling ladders. Targeted crews are seldom able to prevent themselves being captured. "Between the time you see them and the time they control the boat, it takes 15 minutes maximum," says Patrick Marchesseau, captain of the French luxury yacht Le Ponant, hijacked in April by two boats launched from a Yemeni-flagged trawler. The mother ships are very hard to pick out among the Gulf's many fishing boats and dhows, and they give the pirates a considerable range. Their crews use GPS devices to track their prey. Five years ago, the International Maritime Organisation advised ships to stay 50 nautical miles off Somalia's coast. Today that has been extended to 200 miles; a Spanish fishing trawler was seized 247 miles off the coast in June.

What do the pirates do then?

Most of them are not interested in the ships' cargoes. They just want to make use of them and their crews to extort money from international shipping operators. It is believed that once the pirates' bosses have a ship's name, they immediately use the internet