MOKPO, South Korea (AP) -- Searchers have now put markers on the surface of the water where the South Korean ferry went down. Part of the ship had remained above the surface until today, but now the entire vessel is submerged.
They're continuing the effort to find some 270 people who are missing and feared dead. Twenty-eight others are confirmed dead.
South Korea's Defense Ministry says divers have attached underwater air bags to the 6,800-ton ferry to keep it from sinking further.
Strong currents and rain have again made the search effort more difficult today. Divers worked in shifts to try to get into the sunken vessel.
Three other ships with cranes have arrived at the site to prepare to salvage the ferry. But a coast guard officer says they won't lift the ship before getting approval from family members of those who are believed trapped inside -- because doing so could endanger any possible survivors.