Document Archives — Instructions Primary source documents on instructions for use of engines and equipment on submarine chasers. Documents in this category: Painting and Cementing Vessels of the USN Description of Listening Apparatus Instructions for the Guidance of the Engineer Force Rules for Handling 100 Foot Submarine Chaser Engines Circular Letter D-2: Gasoline Fires on Subchasers Book traversal links for Instructions: Use of engines and equipment ‹ Notice to Mariners Up Painting and Cementing Vessels of the USN ›