  The purpose of this paper is to construct new examples of group-valued moment
maps. As the main tool for construction of such examples we use
quasi-symplectic implosion which was introduced in [HJS06]. More precisely we
show that there are certain strata of $D{\bf Sp}(n)_{\rm impl}$, the universal
imploded space, where it is singular but whose closure is a smooth
quasi-Hamiltonian ${\bf Sp}(n) \times T$ space.
