• Locally owned and operated
  • Guaranteed Rail Side position
  • Unobstructed 360 degree viewing decks for your up close and personal encounter with our Whales
  • Large Stable whale friendly Mono Hull vessel
  • Highest Marine Australian safety standards
  • Low Noise 
  • Lowest Engine Emissions
  • Water level viewing deck – gets you closer to the whales
  • Small Groups – Personalized Service

small_IMG_8570.JPGOwners of Geographe Maritime John and Anne-Marie Wilson love living in the South West and call Dunsborough their home. John hasGMC-40.jpg had a career as a local professional rock lobster fisherman for over 20 years prior to his Charter Business. John is a highly knowledgeable Master and Engineer and is a third generation Western Australian seafarer. John's parents Tina and Joe Wilson were amongst the first surfers, in the 1960's, that came to the Yallingup area to pioneer some of the areas famous surf breaks, from Yallingup to Margaret River.  John and  Anne-Maries experienced crew are passionate about our water ways and protecting our marine life.


The most important feature of our Whale Watching Vessel is a safe 360 degree walk around deck so everyone is guaranteed a rail side position to get as close as possible. On the Kerra Lyn we guarantee everyone has a rail side position for that photo of a lifetime. Just imagine that whale only an arm’s length away as it swims down the side of the vessel watching everyone with their beautiful big eye. Plenty of room for our maximum of 50 including crew.


Due to the length, weight and draft of the Kerra Lyn, she is solid as a rock in the water, ensuring a comfortable ride.


The vessel has as the Dual redundancy of 2 engines, in case of break down you have another engine to rely on.

The vessel is also in AMSA Survey – Australian Marine Safety Survey – Passing the highest safety requirements for a charter vessel.


Both engine in the Kerra Lyn are mounted on specially designed rubber compound mounts to reduce noise and vibration through the hull. The engine room is lined with acoustic insulation making the vessel extremely quiet. Beneficial to our guests and the whales. 

Clean and Green

KERRA LYN is powered by twin 200 HP Cummins and is the most economical/ low emission whale watching / charter vessel in South West.
Both engines run through a dry exhausts/ muffler system with the stacks on the roof of the vessel, which means it is nice and quiet (does not bother our whales or passengers) without any diesel fumes, again pleasant for our passengers.

Locally owned and operated.

100% sightings Guarantee during a Whale Watching cruise August to 16th November.

Free return cruise if whales are not sighted between 1st Sep to 16th Nov, non transferrable tickets, to be used by end of following Whale Watching season.

If you’re going whale watching, do not settle for anything less than our guarantee on our Beautiful big comfortable Kerra Lyn.



dunsborough whale watching . busselton whale watching .  summer bay cruises . private charters . extended voyages . corporate private charters