The RTA has announced the timings for the Dubai Ferry for Ramadan. There have been some changes to the schedule, as there generally are, which are as follows:

The 6pm sailing to/from the Marina/Al Ghubaiba (with stops at Bluewater and Dubai Canal) is now at 8pm instead. The 1pm sailing remains the same.

The round trips from Dubai Marina remain the same (11.30am and 4.30pm).

The sailings to and from Sharjah are as follows:

The Monday-Thursday 10am from Al Ghubaiba and back at 1pm from Sharjah has been cancelled and the other sailings have changed times.

The Friday to Sunday timings are all later than normal. You can find the standard timings here.