27 SU was commissioned at AF Stn Madh Island which was equipped with composite MARCONI T-13/T-14/T-15 Radar, designated as Sector Operation Centre (SOC) of Bombay Sector. In 1966, 27 SU, AF was disbanded and 252 SU, AF came into existence as ADDC of Bombay sector. The existing MARCONI Radar was replaced with Russian P-30 (M) radar. Subsequently on 14 Apr 87, P-40 Radar was also inducted in 252SU, AF. On 24 Sep 91, the old P- 30(M) Radar was handed over to 250 SU, and 252 SU, AF continued as ADDC with the P-40(M) Radar. On 1 Aug 1992, 252 SU handed over the responsibility of Mumbai sector to 272 SU and moved out to 2 Wing. 272 SU was formed in 1990 and became operational with an upgraded Radar on 01 Aug 92. 272 SU assumed the role of Air Defence Direction Centre, Maharashtra sector on 19 Sep 92. The Units has, as aptly, come to be known as "The Marine Scanners". In the year 2000, TRS 2215 moved out to 275 SU and this Unit was allotted with the P-40(M) radar from 255 SU. TRS 2215 was re-inducted on 10 may 2004. The station also has 768 SU as its lodger Units.