Early Quenya
kiryassea
adjective. what is on board ship
kirya
noun. ship, boat
lunte
noun. ship, boat
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
An adjective appearing as ᴱQ. kiryassea “what is on board ship” in the Early Qenya Grammar of the 1920s, an example of a how adjectives can be formed from the locative (PE14/47, 79).
Neo-Quenya: This construction remains valid in Tolkien’s later Quenya, such as 1950s menelessea “✱in heaven” (VT43/13). Thus, I would keep ᴺQ. ciryassëa as an adjective meaning “✱ship-board, on-board” referring to things on a ship, for example: ciryassëa sorasta “ship-board/on-board equipment”. For “on board” as a location, the ordinary locative would be used (PE14/46; PE15/70), for example: á mene ciryassë “go aboard/on board [= on ship]”.