§170.270. Door design, operation, installation, and testing. — Inbound Citations

(f) For inspection and testing of watertight doors, see § 170.270 of this chapter.

Each watertight door operating system must meet Subpart H, § 170.270 of this chapter.

(1) ASTM F 1196-00, Standard Specification for Sliding Watertight Door Assemblies, 2008, incorporation by reference (IBR) approved for § 170.270.

(b) Class I doors fitted in accordance with § 170.270 of this subchapter shall additionally be marked in two-inch letters “RECLOSE AFTER USE”, and be provided with a remote position indicator at the main navigating station of the vessel.

(a) Each hopper dredge must have sliding watertight doors (Class 3) approved under § 170.270 of this chapter if the sill for the door is—

(1) Installed below the bulkhead deck; and

(2) Less than 24 inches above the final waterline as shown by the calculations required by § 174.310 in each damage condition up to and including the maximum amount of assumed damage.

(b) The temporary emergency power source and the final emergency power source must each be capable of operating all doors simultaneously or sequentially as allowed by § 170.270(c) of this chapter.