Kip Ratings
One Kip = 1000 pounds of breaking force
The Kip Rating for each boat is based on a static bollard pull test or modeling done based on the hull design, drive configuration, and static bollard test. Modeling vessels show the breaking force in a dynamic condition. The modeling is submitted to and approved by OSPR.
Default Matrix
From section 851.9(a) of the Tank Vessel Escort Regulations: Default Matrix Option for Matching Tugs to Tankers
The tug or tugs used for an escorted transit shall be able to provide sufficient braking force to stop the escorted tanker from a speed of 5 knots through the water. The braking force of the tug(s) shall match the tanker’s displacement, as indicated in the following matrix:
San Francisco Region Certified Escort Vessels
As of: May 13, 2025
Legacy Website - Tug Rating Chart
