a. Lepectally in leeations near (within about 50 miles of) ground sero, it ie essertia)l that damage control measures, insluding wehdom, be placed in sffect and the fallout begins te reach the ship. This co~ lusion ed on *s experience that in such looatione fallicut. bur.de up very rapidly, (from 0.2 mr to 18 in less than 5 minutes). bd. Presently installed washdowm sywtems using fine spray are ly ~ partially effective in removing relatively heavy, visible, solid particles. Heavier sprays or hoses with a large volume of water are necessary to effectively remove these particles. further, Laprovenerts in drajnages are desirable to remove the large volumes of water required, ce Presently installed washdowm syetens are sost effective wien heading inte the ind. Cross-wind headings result in mich of the spray being blow: from the ships structure, Zig-sagginghelpeinwetting all topside areas and in facilitating drainages ad. Special meagures, including more extensive washdow: equipment and improved drainage, are necessary on bridge structures (especially horisontal surfaces) where critical command personne], normally are stationed. Cammnding ifticer BAIROKO received a relatively high dosage while conning his ship Ke5u