Ras Mohammed and Tiran both appear in Sharm boat catalogues, but a useful comparison starts with the actual ticket. Route, time in the water, equipment and transfers tell you more than the destination name alone.
Choose Ras Mohammed for the park setting
Look at whether the offer is by boat or road. A boat itinerary may include reef stops and White Island, while a land route gives a different view of the coastal landscape. These are not interchangeable visits. If White Island matters to you, check how the operator handles sea conditions and changes to the route.
Choose Tiran for a sea-focused outing
Compare the planned reef stops and whether the activity is snorkelling or diving. Do not assume a landing on the island. Ask whether you can remain aboard during water stops and what assistance is available. The better option for your group is the one whose schedule and conditions suit everyone.
Compare the final cost
Use the same date and number of participants, then add equipment, park fees and any optional dive. Check meals, drinks and hotel pickup. If you have only a short stay, choose one outing and protect a flexible day around it rather than booking two similar trips immediately.