Where can guidance be found regarding deviations from navigation safety rules authorized by the COTP?

Guidance regarding deviations from navigation safety rules authorized by the Captain of the Port (COTP) can indeed be found in 33 CFR 164.55. This section of the Code of Federal Regulations specifically addresses the requirements for navigation safety, including how the COTP has the authority to authorize deviations from established rules under certain circumstances. This regulation is crucial because it outlines the process and conditions under which a deviation may be granted, ensuring that safety is maintained while allowing for necessary flexibility in navigation.

The other options may contain useful information related to transportation and maritime operations but do not specifically address the authority and process for deviations from navigation safety regulations in the way that 33 CFR 164.55 does. Thus, the focus on navigation safety under this regulation makes it the most appropriate source for guidance on the subject.