Oops, me too I didn't noticed the dimension you gave ...
Good idea Norry to built a Stantug on a Wyeforce hull, I prefer the Stantug superstructure !
I fell in love with this small tug when I seen this one at Warwick
A Wyeforce (also at Warwick)
The bow of Wyeforce, like your Tusker looks a little bit more rounded and Stantug more sharp. Her builder has had the same good idea like Norry to build a Stantug on the Wyeforce hull. By this way she is bigger scale Stantug and more suitable for towing.
Xtian