A 4000-gallon, 5m-high, cylindrical water tank and hanging jib designed by New South Wales Government Railways with a valve operable by lever mounted on the end of the jib. Modelled on a tank in use at Murrurundi in the 1950s.
In game, an engine can stay attached to a consist while watering.
The jib length is 8ft, so the separation between track centres served by the jib is 16ft.
There are no fixed tracks. Instead the user must place a trackmark on each of the track splines that pass on either side of the tank, centred on the Surveyor-only blue wedges. The trackmarks must point in the same direction as the wedges.
Given the localised name of the water tank is 'myName', the trackmarks must be named <myName> + '-mark-acw' and <myName> + '-mark-cw'.
Trackmark <myName> + '-mark-acw' is located adjacent to the axis of rotation of the jib on the track serviced by an anti-clockwise swing of the jib. Trackmark <myName> + '-mark-cw' is located symmetrically on the track on the opposite side of the crane.
Adjust the trigger radii of the trackmarks to 6m.
The tank should not be placed on heavily graded track.
The jib is animated. It will rotate anti-clockwise (track-acw) or clockwise (track-cw) by 90 degrees or 38 degrees depending on whether the loco's water port is centrally located (standard) or on a side tank, respectively. The presence of a side tank port is indicated to the water tank's script by use of a 'yes' value for a 'lsp_side-tank' tag in the 'extensions' container of the vehicle's config file.
If accurate alignment between the jib and the loco's water port is to be achieved, the longitudinal offset (metres) from the vehicle's pivot point (main mesh origin) and its water port must be specified by a 'lsp_offset_water' tag in the vehicle's extensions container.
For locos under player control, the player should spot a tender's water port adjacent to the jib's rotation axis or at the jib-facing edge of the drain grill for a side-tank engine. Under AI control, use the 'Drive to Track Mark' command and select one of the water tank's target track marks. Because there are no fixed tracks, the 'Drive to (industry)' command cannot be used.