Title:TYPE 170 ASDIC AND THE A/S MORTAR MK 10 PART 2: INTRODUCTION TO THE MORTAR [Main Title]
Film Number:DRN 521B
Other titles:
Summary: A Navy Instructional film on the operation of the anti-submarine Mortar Mark 10. Controlled automatically by the Type 170 ASDIC the film shows the loading and location of the guns and how they are able to lock onto a moving submarine and, with the help of the computer, change the velocity of the mortar to maintain a uniform angle of elevation and fix the depth at which the mortar will explode.
