For UK flagged vessels the "Masters rounds" are required to be entered into the official log book.
The requirement comes from a Merchant Shipping Act. What legistlation, if any, required this to be placed into UK law I do not know.
The latest UK version is below.
The Merchant Shipping (Crew Accommodation) Regulations 1997
Maintenance and inspection of crew accommodation
35.—(1) The crew accommodation shall be maintained in a clean and habitable condition and all equipment and installations required by these Regulations shall be maintained in good working order.
(2) Every part of the crew accommodation, except store rooms, shall be kept free from stores and other property not belonging to or provided for the use of persons for whom that part of the accommodation is appropriated, and in particular no cargo shall be kept in any part of the crew accommodation.
(3) The master of the ship or an officer appointed by him for the purpose shall inspect every part of the crew accommodation at intervals not exceeding 7 days and shall be accompanied on the inspection by at least one member of the crew.
(4) The master of the ship shall cause to be entered in the ship’s official log book a record of—
(a)the time and date of the inspection;.
(b)the names and ranks of the persons making the inspection; and.
(c)particulars of any respect in which the crew accommodation or any part of it was found by any of the persons making the inspection not to comply with these Regulations..