The US government has warned ships sailing off Yemen's coast of the risk of Al-Qaeda attacks similar to a suicide bombing of the US warship Cole in 2000 that killed 17 US sailors. The US Office of Naval Intelligence said on its website that ships in the Red Sea, the strategic Bab Al-Mandab Strait between Yemen and Djibouti, and the Gulf of Aden along Yemen's coast were at the greatest risk. “Information suggests that Al-Qaeda remains interested in maritime attacks in the Bab Al-Mandab Strait, Red Sea, and the Gulf of Aden along the coast of Yemen,” the office said in a statement, citing an advisory by the US Department of Transportation. “Although it is unclear how they would proceed, it may be similar in nature to the attacks against the USS Cole in October 2000 and the M/V Limburg in October 2002 where a small to mid-size boat laden with explosives was detonated,” it added. – Reuters The Transportation Department statement said more sophisticated methods of attack by Al-Qaeda in the waters near Yemen could include missiles or projectiles. The US advisory, dated March 10, said more sophisticated methods of attack by Al-Qaeda in the waters near Yemen could include missiles or projectiles. “Although the time and location of such an attack are unknown, ships in the Red Sea, Bab Al-Mandab Strait, and the Gulf of Aden along the coast of Yemen are at the greatest risk of becoming targets of such an attack,” the statement added. “All vessels transiting the waters in the vicinity of Yemen are urged to operate at a heightened state of readiness,” it said, adding that vessels were at greatest risk in areas of limited maneuverability or while anchored or at port.