(1) This section applies to sea installations that are prescribed vessels.
(2) The fee prescribed for an application to vary a permit to authorise an increase of more than 50 in the number of members of the public permitted to visit the sea installation per day, or to stay overnight on the sea installation, is the greater of the following amounts:
(a) $17;
(b) the amount worked out using the following formula:
where:
(a) the maximum number of nights per year on which the permit authorises the vessel to be used for the provision of sleeping accommodation on a commercial basis; or
(b) if the application seeks an increase in that maximum number of nights--the number sought.
"P " is the number of persons for whom sleeping accommodation on the vessel is provided on a commercial basis.