Note that variant t does not apply to postmark types with the -1 or -2 variant (ie, Type 2-1, 9-2, etc). These variants have no standard for the location of the ship's name.
The following cancel is classified as Type 2tnu
The following cancel is classified as Type 3ty (C-TTT) ("FLAG SHIP BASE
FORCE.") [A-42a]
The following cancel is classified as Type 7dit(3)
The following cancel is classified as Type 7

The above example is provided to show the normal placement of the ship's name in
the dial of a Type 7 cancel in comparison to the t variant.