  Thirty years after the introduction of port-Hamiltonian systems, interest in
this system class still remains high among systems and control researchers.
Very recently, Jacob and Laasri obtained strong results on the solvability and
well-posedness of time-varying linear port-Hamil\-to\-nian systems with
boundary control and boundary observation. In this paper, we complement their
results by discussing the solvability of linear, infinite-dimensional
time-varying port-Hamiltonian systems not necessarily of boundary control type.
The theory is illustrated on a system with a delay component in the state
dynamics.
