4. Where a fee is determined by the amount of work involved on or off the ship–
(a)travelling time in excess of 4 hours for each visit to a ship in the United Kingdom shall be disregarded;
(b)travelling time includes the time taken to travel from the United Kingdom to a ship overseas and back to the United Kingdom, subject to a maximum of 10 hours in any 24 hour period;
(c)the cost of travelling and subsistence incurred in visiting a ship outside the United Kingdom shall be charged additionally to the hourly rate;
(d)where the work is carried out in conjunction with a non-statutory survey for which fees are not payable under these Regulations, the work involved shall be the extra time taken to ensure compliance with the requirements for which fees are charged under these Regulations;
(e)any specific costs incurred in respect of computer or outside services shall be charged additionally to the hourly rate;
(f)in the case of fees payable for services in connection with the Radio Rules where the amount of work chargeable for is not an exact hour, the time shall be rounded up to the nearest quarter hour.