The new Kuching Marina is on Sungai Sarawak, approximately 12 miles upriver.
Not officially open yet. As of today still FOC.
Water and electricity available and showers / toilets available during office hours.
Transport to town can be a problem unless you hire a motorbike / car or hitch a lift.
No facilities nearby except restaurant in adjacent Borneo Convention Centre.
Link below to a Google map showing Marina and location of Check In offices.