OFB meaning in Banking ?

The One Fathom Bank Lighthouse (Malay: Rumah Api One Fathom Bank or Rumah Api Permatang Sedepa) refers to two offshore lighthouses in the Strait of Malacca, specifically, on a shoal within Malaysian waters, dubbed One Fathom Bank (Permatang Sedepa), off the coast of the state of Selangor.

The One Fathom Bank station was originally served by a lightship stationed in 1852 before a permanent screw-pile lighthouse was built in 1874; the lighthouse has since been replaced twice over the course of its service, in 1907 with a concrete pile lighthouse, and in 1999 when a larger modern counterpart was built parallel to the 1907 lighthouse, superseding its predecessor's duties. The lighthouses have since been referred to as the "old" One Fathom Bank Lighthouse and the "new" One Fathom Bank Lighthouse.

Due to being well out to sea, both lighthouses are only accessible by boat. While both sites of the lighthouses are open, their towers remain off-limits.