The Commercial Port Law Article 55

When engaging in salvaging sunken ships, materials, and shipbreaking, construction should be made according to the operational plan approved by the Maritime and Port Bureau. No harbor waterway facility can be damaged. Ship navigation safety should also not be affected.If above mentioned operations cannot be completed within the time limit, then a description of the event should be made within 7 days, to apply for an extension.
中文原文 商港法第55條
從事打撈沉船或物資及為船舶解體等相關作業時,應依航港局核准之作業計畫施工,不得損害港灣航道各項設施或影響船舶航行安全。
前項作業未能如期完工,應於期限屆滿七日前敘明理由,申請展期。

English translation for reference only; the Chinese text prevails. Not legal advice.