Kanakanavu abaŋɯ, Oponohu-Rukai havaŋu, Siraya avang, Gaddang ʔabaŋ, Tiruray ʔawaŋ, Iranun awaŋ, Mentawai abak, and Moken kabaŋ c) *baŋkaʔ - cognates include Kavalan baŋka, Tagalog baŋkaʔ, Tausug baŋkaʔ, Mori and Muna baŋka, and Sumbawa baŋka d) *waŋkaʔ' - cognates include Manggarai and Rembong waŋka, Tobati wăgě, Yabem waŋ, Suau waga, Fijian waqa, Tongan vaka, and Hawaiian waa; Tahitian and Samoan vaa Instead of being cognates, the protoforms *baŋkaʔ and *waŋkaʔ are believed to be doublets. The protoforms *qabaŋ and *baŋkaʔ are composites with a common precursor, with the *qa- and -*ka positioned differently. Only *qaCu and *qabaŋ can be traced back to Proto-Austronesian, with the rest being later developments. The outrigger float is called the ama in many Polynesian languages (compare Hawaiian ama, Māori ama, and Samoan ama, all meaning 'outrigger float'), realisations of Proto-Malayo-Polynesian *saRman 'outrigger float'. Similar terms also exist in other Malayo-Polynesian languages, such as Pohnpeian dahm, Yapese thaam, Ambonese Malay semang, all meaning 'outrigger float', as well as Chamorro sakman meaning '[a] large canoe.' The outrigger boom—spars connecting the ama to the main hull (or the two hulls in a double-hull canoe)—are called iako in Hawaiian and kiato in Māori (with similar words in other Polynesian languages), ultimately from Proto-Oceanic *kiajo or its doublet *kayajo both meaning 'outrigger boom' (compare Loniu kiec, Kiribati kiaro, and Tongan kiato, as well as Seimat ayas and Gedaged ayad, all meaning 'outrigger boom'). In Philippine languages, the outrigger floats are called katig or kate, from Proto-Philippine *katiR. Types Double-outrigger boats are more prevalent in Southeast Asia, though single-outriggers and catamarans also exist. They have two outrigger floats connected to spars lashed across a single hull. They range in size from small vessels like the jukung, vinta, and the paraw; to medium-sized trading and fishing vessels like the balangay and basnigan; to very large warships like the karakoa and kora kora. In Philippine vessels, additional booms called batangan are usually added across the outrigger spars (tadik), in between the outrigger floats (katig) and the main hull (bangka). In modern terminology, especially in leisure or sport boating, double-outrigger ships are usually termed trimaran or triple-hull ships. An unusual type of double-outrigger boat design, preserved in scale models in the Pitt Rivers Museum, forms a triangle shape. The front ends of the outriggers are attached directly to the hull, while the rear ends are splayed out. These boats were small and used exclusively