A Vulcanian eruption is a short, violent, relatively small explosion of viscous magma (usually andesite, dacite, or rhyolite). This type of eruption results from the fragmentation and explosion of a plug of lava in a volcanic conduit, or from the rupture of a lava dome (viscous lava that piles up over a vent).
Sail & Sign Card / Account. You will receive your Sail & Sign Card when you first check-in at your embarkation port. Sail & Sign is Carnival's onboard cashless credit program, which allows you to charge all your services, gratuities and purchases during your cruise to your cabin. Your Sail & Sign Card is also your cabin key and boarding card.
Carnival Corporation & plc. Carnival Corporation & plc (Carnival) is an American-British cruise company and the world's largest travel leisure company, with a combined fleet of over 100 vessels across 10 cruise line brands.