The sailing time is 5h with Krilo catamaran, and 6h with Jadrolinija catamaran.

Usually, the catamaran has a dedicated pier number from where they depart, but as the allocation is done by the port authorities, they might assign another pier with short notice, so you should be at the port 30 minutes before departure and check the pier number, here you have more information about the Split port.

On catamarans operated by Jadrolinija, you can not bring your bike. However, on the Krilo catamaran, you can bring your bike, but you have to buy a ticket for it in advance, as there are only a few spaces.

If you travel with Jadrolinija you can see their rules here. If you travel with Krilo you can see the rules for pets here.

Unfortunately, you can not reserve a seat upfront as seating is free. There is a seat for all passengers but the only option to catch a larger chunk of seats next to each other is to be first in line when you board the catamaran in Split.

Yes, all the catamarans have toilets.

Yes, each of the catamarans has a kiosk/bar, where you can buy, coffee, drinks, and snacks.

Each of the catamaran companies has different policies for ticket amendment and cancellation, so you will have to check with them.

Traveling with a catamaran is more like traveling by train, you can walk around onboard, you have toilets and catering.

Yes, it is possible to do a day trip via ferry. You could take the morning catamaran from Split and be in Dubrovnik around noon. The departure back to Split is always around 16.30h, giving you a few hours to explore the city.

2023 Split to Dubrovnik Ferry Prices

Below you can see the 2022 summer price-lists for the catamarans from Split to Dubrovnik.
Kapetan Luka- Krilo catamaran ticket costs 45 EUR one way, while Jadrolinija catamaran ticket costs 38 EUR one way. There is also a TP Line catamaran operating for 45 EUR as well.

Split – Dubrovnik 2023 Jadrolinija Catamaran Prices

Split – Dubrovnik 2023 Krilo Catamaran Prices

Split – Dubrovnik 2023 TP Line Catamaran Prices