Passage: Once a fishing town, Pattaya first boomed as an R&R destination during the Vietnam War. It is striving to become a family-oriented seaside destination. In 2007, foreign tourists visiting Thailand totalled 14.5 million.Popular activities include golf (19 golf courses within 40 minutes of Pattaya), go-kart racing, and visiting different theme parks and zoos such as the Elephant Village, where demonstrations of training methods and ancient ceremonial re-enactments are performed daily. The private Sri Racha Tiger Zoo features tigers, crocodiles, and other animals in daily shows. The Vimantaitalay tourist submarine offers 30-minute trips underwater to see corals and marine life just a few kilometres offshore. Nong Nooch Tropical Botanical Garden, about 15 kilometres south of Pattaya, is a 500-acre (2.0 km2) botanical garden and orchid nursery where cultural shows with trained chimpanzees and elephants are presented. The park also keeps several tigers and an assortment of birds.

Question: How far off shore does the tourist submarine travel?
few kilometres