Charterer

Char'terĀ·er noun One who charters; esp. one who hires a ship for a voyage.
Found on http://www.encyclo.co.uk/webster/C/56

Charterer

• (n.) One who charters; esp. one who hires a ship for a voyage.
Found on http://thinkexist.com/dictionary/meaning/charterer/

CHARTERER

The person to whom is given the use of the whole of the carrying capacity of a ship for the transportation of cargo or passengers to a stated port for a specified time.
Found on http://www.insurexchange.com/glossary/maritime.htm

CHARTERER

The person who has chartered the ship for a specified period of time.
Found on http://ports.co.za/maritime-terms.php
No exact match found