as a 'sometimes work in a canvas
shop sorta expertish,'
Although Ikat and Batik are beautiful and would be cheap
there, natural fibre is problematic in boat upholstery. Natural fibres mildew and would be bleached by necessary treatment. There are sound reasons why marine
materials are solution dyed acrylics and other synthetic fibres
If you wanted the ikat look and easy washability, just do a slipcover.
Look at Outdura and Sunbrella Furniture Fabrics - they have some beautiful patterns that aren't the same old nautical crap
But most any SYNTHETIC furniture upholstery cloth will be fine for interiors