Chinese scientists say they have produced a submarine for underwater archeological research, as well as for underwater photography, seabed maps drawing and sea rescue.

The Beijing Morning Post reports the sub is 1.23 meter, or about 4 feet long, operates at a speed of up to 1.5 meter per second and can work for two to three hours.

Earlier this year, the submarine successfully helped archeologists study an ancient warship in south-east Fujian province.

(CRI.com December 6, 2004)