GCG Marine Inc.

GCG Marine Inc.; established in late 2005 is located in the SARNIC industrial zone in Izmir. The company builds the ROCKHARBOUR down east of Maine LOBSTER type deluxe motor yachts with latest vacuum bag infusion technology.

The manufacturing site compromises an 2500 m2 closed and 500 m2 open area, where all boats are designed, engineered, moulded and built in house, including electrical, electronic works and all furniture aboard.

GCG utilises cad engineering, tooling and latest manufacturing techniques and uses only the finest quality materials that allows to build state of the art yachts with exeptional performance. Our unique design and robust construction makes the most stable hull. Our Rockharbour yachts will get you to your destination even in the most challenging conditions.

Please see all our models in our web site and enjoy our online 360 degree tour of our RH42 sedan.
Models RH 42 Sedan, RH 42 Hard Top, RH 42 Open, RH 42 Flybridge.


Ayşe KORALTAN : President of the Board

Gökhan KORALTAN : Vice President of the Board


Production Technology

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35rd International İstanbul Boat Show
35rd. International İstanbul Boat Show. Rockharbour is at Dock A & B with the models 36 & 42.

34. International Boat Show Istanbul
We invite you to take a close look at our new model “RockHarbour 36” and “RockHarbour 42”  in 34. International Boat Show Istanbul, at our Turkey distributer CONSEPT MARINE’ s booth.

We invite you to take a close look at our new model “RockHarbour 36 Hard Top” in CNR Eurasia Boat Show, Istanbul, at our Turkey distributer CONSEPT MARINE’ s booth.Hall 2, Stand B14 GCG Marine

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