One aspect I always liked very much during my time with Lloyd's Register was the Time Limited (P)Review: Opening up the design documentation at 9:00 in the morning, start a blank report document, and spend the rest of the day just jotting down any comment that comes to the eye, and 17:30 h copy the report document into an email to client and hit the send button.Job done.

The result is not a definitive approval like Class would provide but a snapshot scan of critical areas of the design. The deliverable is a report of what was found during an agreed number of hours of work. It does therefore not compare to Class review which aims at complete coverage and approval. The result of the TLP is fully determined by the number of hours assigned and the quality of the information provided. Any minute lost in searching out things that are unclear goes at the expense of the actual work. 

The priority given to aspects during the TLP is determined by an estimate of the risk involved and the likelyhood of errors in that aspect. Ff course attention will be paid to any area of concern mentioned by the client.    

The TLP can also cover a part of the design, but of course validity of the conclusions will be limited to the situation shown.

Comments in the TLP generally indicate areas where the design needs some work. In reporting I tend to use a scale of 1 to 5:

1. This would not pass. Back to the drawing board.
2. Unlikely this will pass, but who knows. There may be supporting arguments? 
3. Could well pass.
4. Would be surprised if this would attract comments.
5. This should be a no-brainer.