Continuous Machinery Survey (CMS) is a program that allows shipowners to spread required machinery surveys over a five year period, with approximately 20% of machinery inspected each year. This helps balance workloads, downtime, and maintenance costs. The Chief Engineer is responsible for inspecting and recording items on the survey schedule. Records of inspections must be presented to the attending surveyor. Certain key systems and safety devices must still be verified personally by the surveyor during annual inspections. CMS allows for more efficient planning of inspections, maintenance, and inventory of spare parts over a five year period.

1. 15.05.2018 Continuous Machinery Survey
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One Answer:
Continuous Machinery Survey
What is Continuous Machinery Survey? Hot to get ready to it?
Continuous Survey of Machinery (CMS) is a program approved by Classification
Society in which the total number of survey items is arranged in order to provide for a
survey of approximately 20% of the machinery each year during a five-year period. The
which should be machinery opened up for survey each year may be chosen by the
owners and split evenly over the five years, in order to balance the workload, downtime
and maintenance cost each year. CMS allows owners and operators to spread the costs
and inventory of spares on board over a five year period instead of carrying out all
inspections in the last fifteen months in the Special Periodical Survey system.
The Chief Engineer is responsible for opening up and carrying out inspections on certain
items of the machinery listing on the Survey Status. The records of the Chief Engineer's
inspection and an operational test by the attending Surveyor at a later date may be
accepted. For previously inspected machinery to accept by the attending Surveyor a
Chief Engineer’s CMS Survey Report with required supporting documents and photos
must be presented to the Surveyor for validation. Thus, Chief Engineers should keep
records of inspection carried out to be used to credit machinery items at the next Annual
Survey of the vessel.
Chief Engineers Continuous Machinery Survey Report should include:
1. Ship's Name
2. IMO number
3. Flag
4. Owner's Name
5. Chief Engineer's Name
6. Chief Engineer's License details
7. Date of Survey
8. Voyage details
9. Name of surveyed equipment
10. Condition found
11. Details of overhaul/inspection/repair
12. Repaired or replaced parts

2. 15.05.2018 Continuous Machinery Survey
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Only one visit of the Surveyor during Annual Survey, or, other periodic surveys may be
used to credit items covered by the Planned Maintenance system and inspected by the
Chief Engineer since the last Annual PM Survey.
Below machinery items must be verified personally by the attending Surveyor:
System Piping (All)
Valves (All)
Sea Chests
All Operational Tests
Fire Pumps
Fire Fighting Equipment
Main Engine Crankpin and Crosshead bearings
All Safety Devices, Trips and Relief Valves
Air Receivers with associated Relief Valves and Safety Devices
Heat Exchangers and Unfired Pressure Vessels with design pressures over 6.9 bar (7kgf/cm2, 100 psi) and associated
Relief Valves
Steering Gear Piping, Pumps and Control/Relief Valves
Steam Turbines