Guide to the Tide Tracker

Guide to tide tracker.

The following is a GUIDE only to assist with understanding the tide tracker that can be found at

Notes on below.

For OOD’s the main columns of interest are arrivals, sailings and channel movements.

If an inbound ship has a PO of 14:00 in general terms that ship will be at Portishead point 15:30-15:45, or one and a half, to one and three quarters of an hour after PO time.

For departures with tugs in general terms it will take one hour from sailing time to leaving the lock, for non tugged departures it takes around 45 minutes to leaving the lock.

Sometimes quicker, particularly near high water.

The request from VTS is that OOD’s look at the tide tracker before phoning in so as you at least have the names of the ships to hand and VTS staff aren’t wasting time spelling ships names.


Columns in order of view:

Column 1: TYPE.

ARR-Arrival, ship inbound to Avonmouth, or Portbury dock.

DEP- Departure, ship sailing from Avonmouth, or Portbury dock.

SHF- Shift, vessel shifting from one berth to another berth, occasionally it may shift from Avonmouth to Portbury, or Portbury to Avonmouth.

CHA- Channel movement, Ship passing through our VTS (Vessel Traffic Services ) area that is tracked on tide tracker.

Column 2: Vessel.

Vessel- Name of ship.

Column 3: Agent.

Agent-Short code for ships agent .Not relevant to PYSC OOD’s.

Column 4: ETA/D

Ships ETA at pilot station for arrivals, or departure time from berth for sailings.

If inbound eta has a K after it this means eta King Road, which is the area of water to the East of Portishead point.

Column 5: Dock.

Dock ship is bound to, or from.

Column 6: Lock .

If a ship sails without a pilot, the lock time indicates estimated time in the lock.

Column 7:PO.

Pilot Order, this is the time the pilot will board at Breaksea for inbound ships, or boarding time ready to sail for departures.

Column 8: L x B.

Length and breadth of the ship.

Column 9: D.

Draught of the ship ie the amount of ship below the water.

Column 10:P’t.

Initials of pilot if ship is piloted.

Column 11: Berth.

Berth the ship is bound for, or sailed from.

Column 12: Event.

Real time event logging, ie Pilot boarded, time will be logged on tide tracker.

Column 13,14&15: Bow, Stern Push.

Position of tugs if used.

Column 16: Event Time.

Time of tracked events, ties in with column 12.

Column 17: Pilotage.

C = compulsory pilotage, NC= Non compulsory pilotage ,SG= Sharpness and Gloucester pilot.

Column 18: Tugs.

Number of tugs for this movement, 3+2 for an arrival means three tugs in estuary and two tugs to the berth, 2 + 1 for a departure means two tugs in dock, one tug to the estuary.





(Updated on 22/08/2016)

© 2021 PYSC