Springfield 2-3/8" Locking Fixed-Height Post - 13" [3300713] Marine Navigation & Instruments | Sounder/Sonar Modules and its advanced lid design

and its advanced lid design provides both security and easy access

swivel adds 3/4″ to height

Aluminum Boat Hook - 12' - 3-Piece

battery status

Use 989-1 Right Angle Base (sold separately) if mounting to a vertical surface and folding tower fore and aft

Springfield 2-3/8" Locking Fixed-Height Post - 13" [3300713] Marine Navigation & Instruments | Sounder/Sonar Modules and its advanced lid design2 3 8" Locking Fixed Height Post 13" Anodized to withstand all conditions. Heights are from the top of the post to the deck when the post is installed. Fits into any 2 3 8 Plug In base (sold separately). Use with any 2 3 8 Trac Lock swivel (sold separately), swivel adds 3 4 to height.