PROTECTIVE CONTAINER FOR RETRACTABLE PERISCOPE AND OPTRONIC MASTS

摘要

For a retractably mounted periscope and optronic mast on submarines a container is described which is part of the pressure hull and into which the mast is retracted completely when diving. The container allows the viewing windows of mast to be made as large as required without the need for thickening the panes when the size of the windows is enlarged. The container is provided with a seal 9 on which the lid 7 of the mast sits when retracted and with a passage 2 with a non-return valve through which water can be discharged on retraction. IMAGE