Progress Report on Underwater Explosion Research - Bureau of Ships Symbol E139. Part 24 - Analysis of the Explosion Damage from Two Small Charges Fired Against the Hull of a Liberty Ship. Part 25 - Energy Absorption of Steel Plates of Different Thicknesses Under Dynamic or Static Loading. Part 26 - The Resistance of Thick Fused-Quartz and Plastic Plates to Static and Underwater Explosion Pressures