303 Changes in Level 303.1 General. Where changes in level are permitted in floor or ground surfaces, they shall comply with 303. The applicable sections have been noted below. In some cases, notes have been provided indicating some of the requirements. Such controls may be located in spaces open to passengers.
Size depends on length of aisle.
For Subchapter K vessels, a ladder leading to a deck scuttle may not be used as a means of escape except when a vessel is less than 65' in length. CFR for subchapters H and K also require guard rails, deck rails and storm rails in certain situations. III-8.2 Clear instructions to be followed in the event of an emergency shall be provided for every person on board. The system shall be audible. All critical communications such as posted emergency instructions and warning signs must be available in accessible formats for persons with visual impairments.