The derrick to be laid down on deck, cargo blocks, span takles, guide rollers and all moving parts of derrick of derrick to be dismantled. Cleaned and greased with special grese.

• 吊杆放置甲板上,吊货滑车,调节跨幅复式滑车,导轮及吊货杆上所有活动部件拆开,清洁,加优质润滑脂。