3D Nautical Wood Maps Hawaiian Islands, Hawaii. Solid wood framed, 3-Dimensional, bathymetric chart carved in Baltic Birch wood. Intricate detail is carved and laser etched creating a unique & accurate artwork. The finishing techniques bring out the natural grain of the Baltic Birch. Measures: 43" x 13.5". Lake & Ocean Wood Map Art's Charts are 3-dimensional bathymetric charts carved in Baltic Birch wood. The intricate detail is carved and laser etched to create a decorative & scientifically accurate artwork. The special finishing techniques bring out the natural grain of the Baltic Burch. A Bathymetric Chart is the nautical equivalent of a dry land topographic map.