Wreck removal of"Hai Hong Da" is a comprehensive salvage project including underwater oil pumping, sling penetrating, splitting the shipwrecks by chain saw, lifting of the overall engine section into barge, fore section cargo removal by grab bucket and so on.This is the first time for Shanghai Salvage Co., to lift the whole engine section to a barge from seabed.This article reveals the shipwreck salvage plan;troubles encountered and remedy method during rigging slings penetration from bottom of shipwreck and lifting the shipwreck engine section as a whole.It provides a good teaching material for similar projects.