IIRC the Spey 512-14DW on the BAC One Eleven 475 and 500 was 12000 lb st thrust Dry and 12500 lb st thrust Wet.
I was a sometime flying spanner on the SOAF -475s and they would often be DRY out of Muscat at 35 C and wet out of Hurn, UK at 10 C due to the 6000ft runway.
It wasn't a lot of extra thrust but every little helps.
I seem to recall the typical fuel flows at T.O. power were 7,000 to 8,000 lbs/hr dry and > 10'000 lbs/hr wet ( the FF needles went off the top of the scale).
The Demin Water tank held 110 imp. gallons and this would last about 2 mins.
This means that there was more water than fuel going into the engine on a Wet T.O.