guest [
OSBM Bolt: Immingham Dock 
OSBM Bolt on 1st floor roof of O.P. Tower.
Location
Grid reference: TA 2087 1569.
Landranger 113: Grimsby, Louth & Market Rasen.
Structure: Unknown.
Waypoint: OS0778.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Immingham,
3.44km to the west.
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Immingham to Patrington levelling line. The surveyor's description was OSBM Bolt on 1st floor roof of O.P. Tower.
Logged Visits
Logged on 27th June 2007 by Brisey. Condition: Destroyed.
Not sure what O.P. means, but as observed from the sea wall, there is no tower here anymore, just an effluent lagoon and a tank farm, so I think this has gone.
Location
Grid reference: TA 2087 1569.
Landranger 113: Grimsby, Louth & Market Rasen.
Structure: Unknown.
Waypoint: OS0778.
Neighbouring Flush Brackets
| G4483 | Immingham Dock, Tide Gauge Aux 2 389.49m to the southwest. |
| G4484 | Immingham Dock 718.05m to the south. |
| G4658 | Immingham Dock, Tide Gauge BM 1.15km to the northwest. |
| G4570 | Immingham, Queens Road 1.24km to the southwest. |
| G4663 | Immingham, School 2.43km to the southwest. |
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Immingham to Patrington levelling line. The surveyor's description was OSBM Bolt on 1st floor roof of O.P. Tower.
Logged Visits
Logged on 27th June 2007 by Brisey. Condition: Destroyed.
Not sure what O.P. means, but as observed from the sea wall, there is no tower here anymore, just an effluent lagoon and a tank farm, so I think this has gone.
If you have any corrections or additions to this record, please let us know.