4. Vessels whose construction may be found objectionable, notwithstanding their being built to the tables of the Register, will be excluded from classification in said Register. The arbitration provided for in Sec. 1, Par. 19, will not be admitted in this case. 5. Vessels built under supervision will be entitled to the distinctive mark «. The surveyor shall visit the vessel as often as possible when building, from the laying of the keel until she is completed with equipments and outfit on board. In steam vessels built under special survey, the machinery and boilers must also be constructed under special survey. See Sec. 89. The boilers must be tested by hydraulic pressure, and machinery tested by steam, as per Sec. 89. 6. Inthe event of damage by stranding, collision, fire, or other accidents of a serious nature, to vessels classed in the Register, the class will be with- drawn in consequence of the disaster. The surveyor must then be called to make a survey of the damage, and the necessary repairs must be made under his inspection, when the class will be restored. Should the owner fail to comply with this important request, the class is liable to be withdrawn from the Register. 7. When, through age, disaster, or want of care, it is found necessary to lower the class, the term of years corresponding with the reduced rating will be given. 8. Besides the established periodical survey, steel and iron vessels must, if possible, be examined in dry dock once each year by a surveyor of this Society, and a note made of same in the Supplement. g. Steel and iron vessels may retain their class and accompanying period of time assigned them in the Register so long as the hull, machinery, equipments, and outfit are kept up to a standard of efficiency satisfactory to the Committee, and the conditions of the periodical surveys are complied with. See Secs. 1 and 2. RULES FOR THE CONSTRUCTION OF STEEL VESSELS. CLASSIFICATION SURVEY. FOR VESSELS NOT BUILT UNDER SPECIAL SURVEY. SECTION 3. 1. In order to procure or maintain a class, vessels not built under special survey must be examined in dry dock, and such portions of the ceilings removed as the surveyor may require to determine the condition of the inner bottom and scantlings within the double bottom. The surveyor must ascertain the condition of the hull throughout, as well as that of machinery, equipments and outfit, as given in Machinery Rules, Sec. go. FIRST AND SECOND PERIODICAL SURVEYS. SECTION 4, 1. The first and second periodical surveys of steel and iron vessels that are four and eight years old respectively, will be subject to the same examination and conditions given in Sec. 3, Par. 1. THIRD PERIODICAL SURVEY. SECTION 5. 1. When the vessel is twelve years old, or at the termination of the third periodical survey period, including the years allowed for building under super- vision, the following survey will be required : 2. The vessel to be placed in dry dock, the fore and after peaks to be cleared, and coal removed from the bunkers. 3. The surveyor may, if he considers it necessary, cause the whole of the ceilings to be removed for the purpose of scaling and painting all of the metal parts of the hold, and for testing the thickness of the materials by drilling holes in same wherever he may deem it necessary. Should the material so tested show a deterioration of 25 per cent. or more from their original thickness, he may cause the same to be removed and new material of suitable thickness wrought in their places.