HMAS Leeuwin (HS 01/A 245) is the lead ship of the Leeuwin-class of hydrographic survey vessels operated by the Royal Australian Navy (RAN).
Leeuwin was ordered from NQEA Australia on 2 April 1996, and built at the company's shipyard in Cairns. She was laid down on 9 May 1997 and launched on 23 June 1998. Leeuwin and sister ship Melville underwent a joint commissioning ceremony on 27 May 2000. Leeuwin initially carried the pennant number "HS 01", but this was changed to "A 245" in 2004. She is named after Cape Leeuwin, the south-west-most point of the Australian continent.
Other ships in the class are:
HMAS Melville
As a Letterbox Hybrid cache, you will find a logbook AND a Stamp. The stamp is not a trade item but intended to stay within the cache. Use it to stamp your own notebook, and stamp the logbook with your own personal stamp, OR alternatively, simply date and sign the logbook as you would normally do at any other geocache. Again, the stamp and logbook remain in the letterbox for the next visitor to use.