187. In recording trend analysis data for the main propulsion engines on your anchor-handling supply boat, it is important to take and record readings under similar, if not constant conditions of load and speed each time. What other criteria must be considered as to when the readings are to be recorded?

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the readings should be recorded when the lube oil and cooling water temperatures are stabilized within plus or minus 5°f of normal operating temperature under the conditions of specified load and speed.

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