(f)if in compliance with the provisions of this clause any thing is done or is not done,such notto be deemed a deviation. 22. should the vessel not be delivered by the _________ day of _________ 19_________,the charterers to have the option of cancelling. if the vessel cannot be delivered by the cancelling date, the charterers, if required, to declare within 48 hours after receiving notice thereof whether they cancel or will take delivery of the vessel. 23. any dispute arising under the charter to be referred to arbitration in london (or such place as may be agreed )one arbitrator to be nominated by the owners and the other by the charterers, and in case the arbitrators shall not agree then to the decision of an umpire to be appointed by them,the award of the arbitrators or the umpire to be final and binding upon boty parties. 24. general average to be settled according to york/antwerp rules, 1974. hire not to contribnte to general average. 25. the owners to pay a commission of _________ to _________ on any hire paid under the charter, but in no case less than is necessary to cover the actual expenses of the brokers and a reasonable fee for their work. if the full hire is not paid owing to breach of charter by either of the parties the party liable therefor to indemnify the brokers against their loss of commission. should the parties agree to cancel the charter ,the owners to indemnify the brokers against any loss of commission but in such case the commission not to exceed the brokerage on one year's hire.