Overview Reviews Similar Products –> Product Description Offshore chart 90 to 100 miles off coast, Double sided, laminated, 19 x 26 inches. Texas Coastline Offshore from Galveston to the Rio Grande River. 100 to 150 miles off the coast. All charts include GPS coordinates, wrecks, reefs, rigs, shoals, fishing areas, amenities and restrictions. Please refer to our nearshore/inshore charts in this area. Product Videos Custom Field Product Reviews Write a Review Write a Review Captain Seagull Captain Segull Chart – Offshore: Galveston to Rio Grande River, TX Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *