Bulkhead entryways resemble doorways one would have in their home only bulkhead are found onboard marine vessel and vary in size and materials used as well as the fact that most are installed with water tight seals that can seal off sections of the vessels that may be taking in water.
Bulkhead Entryway
There may be dozens of bulkhead entry ways that lead to different sections of the vessel and may range in different sizes depending on their location but all retain the iconic shape and structure. Most bulkhead entryways can be found with the iconic rounded corners and made of heavy metal. These two factors work in unison as they are both designed for the safety of the vessel as mentioned below.
Rounded corners: they are also shared by the port holes for the same reason; rounded corners help increase the capability of a seal to retain its integrity. Test in the early1900s showed that seals with perfect edges are less effective then rounded seals and the design continues to be in use on most vessel porthole and bulkhead entryways.
