MERCANTILE MARINE OFFICE 571 cent, of depth of tank, whichever is greater) above the crown of the tank. See remarks on water pressure on pages 363 to 372. Subsequent Surveys.—The Second No. 1, No. 2 and No. 3 Surveys are due, respectively, when the vessel is 16, 20 and 24 years old, and the inspection increases in rigorousness witE the age. SHIPPING OFFICE ROUTINE. ENGAGEMENT OF CREW. The master must produce the certificates of himself and such of his officers, engineers and crew as require them, also the ship's Freeboard Certificate and Certificate of Registry. The Articles must be dated and signed first by the master. The Articles of Agreement (Form Eng. 1) must be in a form approved by the Board of Trade, and two copies are signed—one is retained by the superintendent, the other the master takes with him. The Agreement must specify the following particulars:— (a) The nature, and as far as practicable, the duration of the voyage, maximum period of engagement, and ports or places to which the voyage is not to extend, and the limits of latitude. (b) The number and description of crew, and how many are engaged as sailors. (c) Time at which each seaman is to be on board, or to begin work. (d) Capacity in which each is to serve. (e) Scale of provisions. (/) Regulations as to conduct on board, fines, etc., for mis- conduct. When the crew are duly engaged the superintendent issues to the master a certificate which the master must produce at the Custom House when clearing his ship outwards. This certificate is the A.A. in the case of foreign going vessels, and the C.C. for home trade vessels. The master also receives the Official Log, a copy of the Articles, the Return List (or Form Eng. 2), Abstract of Articles for placing