Depths shown by isolines and gradient tints. Shipping list no.: 90-0321-P. In margin: "3-Dimensional View. Scale 1:600,000. Viewing angle 35⁰ from horizontal. Vertical exaggeration 6:1." Includes NOS survey index and information, index to adjoining sheets, depth gradient diagram, and LORAN linear interpolator. "Bathymetric map LM142."