1. Merchant Marine College, Shanghai Maritime University, Shanghai, People's Republic of China
2. Navigation College, Dalian Maritime University, Dalian, Liaoning Province, People's Republic of China
3. Nautical Training and Engineering Practice Center, Dalian Maritime University, Dalian, Liaoning Province, People's Republic of China
4. State-owned Assets and Laboratory Management Office, Dalian Maritime University, Dalian, Liaoning Province, People's Republic of China