In the event of the vessel being denied or restricted in sue of port of loading and/or discharging of shore labour and/or tug and/or pilotage assistance because of vessel’s flag or ownership or the wages or the condition of employment of her officers and/or crew of any other vessel under the same ownership or because of the previous trading of the vessel or any other vessel as aforesaid, hire shall cease for the time thereby lost, including direct expenses for standby labour/cranes.