Spannar

Spannar is a manufacturer of hydrostatic release units (HRU) in Grand Theft Auto V and Grand Theft Auto Online.

Overview
Spannar makes HRUs, which is a pressure activated mechanism designed to automatically deploy a life raft in case of an emergency situation, such as a sinking. Just like real life HRUs, the unit only lasts 2 years, with the markdown month calendar wrapped around the side.

One of their HRU devices can be seen on a life boat raft on the Dignity yacht.

Influence
The company is very obviously a parody of the Hammar company, as both companies' names are just tools with the 'E' replaced with an 'A', not to mention the design similarities. The HRU is also based on the Hammar H20 HRU.