jumboize

Verb

 * 1)  To lengthen (a ship) by replacing an existing section with a longer section or inserting an additional section.
 * 2) * 1945, Atlantic Refining Company, Annual Report, The Company:
 * The replacement and enlargement of the entire cargo section, commonly called "jumboizing," of one of the smaller American-flag tankers, now under bareboat charter to the Company, was completed in September.