Page:United States Statutes at Large Volume 47 Part 2.djvu/682

 2286 INTERNATIONAL LOAD LINE CONVENTION. JULY 5, 1930. Rule XXL-Machi'Mry Space Openings in the Freeboard Deck within Superstructures which are fitted with Closing Appliances less ejficient than Class 1. Openings to be prop- S. b . erly eDclotJed. uch opemngs are to e properly framed and effiCiently enclosed by steel casings. Doors in such casings are to be strongly constructed, permanently attached, and capable of being securely closed. The sills of the openings are to be at least 9 inches above the deck where the superstructures are closed by Class 2 closing appliances, and at least 15 inches above the deck where the closing appliances are less efficient than Class 2. Rule XXIL-Flush Bunker Scmtles. tIeI~ bunker &cut- Flush bunker scuttles may be fitted in superstructure decks, and where so fitted are to be of iron or steel, of substantial construction, with screw or bayonet joints. Where a scuttle is not secured by hinges, a permanent chain attachment is to be provided. The posi- tion of flush bunker scuttles in small ships in special trades is to be dealt with by each Assigning Authority. Rule XXIII.-Oompanionways. Oompanlonways. Companionways in exposed positions on freeboard decks and on decks of enclosed superstructures are to be of substantial construc- tion. The sills of the doorways are to be of the heights specified for hatchway coamings (see Rules IX and XVIII). The doors are to be strongly constructed and capable of being closed and secured from both sides. Where the companionway is situated within a quarter of thd ship's length from the stem, it is to be of steel and riveted to the deck plating. Rule XXIV.- VentUators in Exposed Positions on Freeboard and Superstructure Decks. edven~:Slnexpos. Such ventilators to spaces below freeboard decks or decks of super- posl structures which are intact or fitted with Class 1 closing appliances are to have coamings of steel, substantially constructed, and effi- ciently connected to the deck by rivets spaced four diameters apart centre to centre, or by equally effective means. The deck plating at the base of the coamiug is to be efficiently sti1fened between the deck beams. The ventilator openings are to be provided with efficient closing arrangements.