Marine archaeologists take measurements of the anchors - the biggest is almost 4m (13 ft) long Two 500-year-old iron ship anchors have been discovered on Mexico's Gulf Coast, potentially offering ...

was alerted to the remains of the sailing ship - an anchor, a 2.5m-long (8ft) cannon and pig iron ingots believed to have been used for ballast - by fisherman Manuel Polanco. Mr Polanco ...