Five Chinese sailors have been rescued and two died after a sand dredger capsized off Malaysia's southern coast. Another two bodies were also found in the search operation waters, but authorities have yet to confirm their identities. According to a Malaysian official, professional and military "frogmen" will continue to sweep every compartment. The surface search involving helicopters will expand to make sure no trace is missed. 18 people -- 16 Chinese, one Malaysian and one Indonesian -- were on board when the ship capsized on Wednesday.