23.—(1) The undertaker is responsible for and must make good to the Tees Port Authority all reasonable financial costs or losses not otherwise provided for in this Schedule which may reasonably be incurred or suffered by the Tees Port Authority by reason of—
(a)the construction, operation or maintenance of the authorised development carried out within or affecting the area within the relevant TPA limits of jurisdiction or any failure of the authorised development including in particular any expenses reasonably incurred in considering plans, inspecting tidal works, carrying out surveys or doing anything for the purposes of this Schedule;
(b)any other activity or operation authorised by this Order which affects the river or any functions of the Tees Port Authority as harbour authority or which is carried out within the relevant TPA limits of jurisdiction and, in particular, anything done in relation to a mooring or buoy under paragraph 14; or
(c)any act or omission of the undertaker, its employees, contractors or agents or others whilst engaged upon the construction, operation or maintenance of the authorised development carried out within or affecting the area within the relevant TPA limits of jurisdiction or dealing with any failure of such development,
and the undertaker must indemnify the Tees Port Authority from and against all claims and demands arising out of or in connection with the authorised development carried out within or affecting the area within the relevant TPA limits of jurisdiction and any activity or operation authorised by this Order carried out within or affecting the area within the relevant TPA limits of jurisdiction or any such failure, act or omission.
(2) The fact that any act or thing may have been done—
(a)by the Tees Port Authority on behalf of the undertaker; or
(b)by the undertaker, its employees, contractors or agents in accordance with plans or particulars submitted to or modifications or conditions specified by the Tees Port Authority, or in a manner approved by the Tees Port Authority, or under its supervision or the supervision of its duly authorised representative,
does not (if it was done or required to be done without negligence on behalf of the Tees Port Authority or its duly authorised representative, employee, contractor or agent) excuse the undertaker from liability under the provisions of this paragraph.
(3) The Tees Port Authority must give the undertaker reasonable notice of any such claim or demand as is referred to in sub-paragraph (1), and no settlement or compromise of any such claim or demand is to be made without the prior consent of the undertaker.