Answer
A-This notation is related to tail shaft and strn tube.If method 2 or method 3 is being used then t mon file is a pre requisite.
TSM file Contents-
1. Details of service records
2. Details of maintainence records
3. LO Sample to be taken
4.
Lo analysis shore as well as onboard 5. Propeller drop reading (poker gauge)
6. Integrity of inboard outboard seals
7. Replinishment of oil
8.
Last survey report endorsement 9. Monthly basis of oil consumption
10.Water pressure, water flow, make up water, pH, salinity, water temp etc
TSM and TMON is same only different Class notations given by diff classes