A boum/boom (Arabic: بوم) (French: bhum), known as dhangi in India,[1] is a medium-sized deep-sea dhow, a traditional Arabic sailing vessel.
This type of dhow has two masts with lateen sails, a stern that is tapering in shape and a more symmetrical overall structure than other dhow types. The Arab boum has a very high prow, which is trimmed in the Indian version.[2]