33 CFR § 401.90 - Boarding for inspections.
(a) For the purpose of enforcing these Regulations in this part in both Canadian and U.S. waters, an officer may board any vessel and:
(1) Examine the vessel and its cargo; and
(2) Determine that the vessel is adequately manned.
(1) Require any person appearing to be in charge of the vessel to produce for inspection, or for the purpose of making copies or extracts, any log book, document or paper; and
(2) In carrying out an inspection:
(i) Use or cause to be used any computer system or data processing system on the vessel to examine any data contained in, or available to, the system;
(ii) Reproduce any record, or cause it to be reproduced from the data, in the form of a print-out or other intelligible output and remove the print-out or other output for examination or copying; and
(iii) Use or cause to be used any copying equipment in the vessel to make copies of any books, records, electronic data or other documents.
(d) Vessels shall provide a safe and approved means of boarding. Pigeon holes are not accepted as a means of boarding and an alternate safe means of access shall be provided.