Why is MARPOL called 73/78?
Marpol was adopted in 73 and even before the regulations came into force they needed to be updated with TSPP (Tanker Safety and Pollution Prevention) conference of 1978 and so came to be known as MARPOL 73/78.
What is TSPP(Tanker Safety and Pollution Prevention)
Tanker Safety and Pollution Prevention (TSPP) refers to measures taken to ensure the safe operation of tankers and to prevent pollution from tanker-related activities. This can include measures such as regular inspections and maintenance of tankers, proper training of crew members, the use of spill prevention and response equipment, and compliance with international regulations such as the International Convention for the Prevention of Pollution from Ships (MARPOL) and the International Safety Management (ISM) Code. The goal of TSPP is to minimize the risk of accidents and to protect the marine environment from the harmful effects of oil spills and other tanker-related pollution.