SS "Orsova", was a British ocean liner, built by Vickers Armstrong Shipbuilders Ltd. of Barrow-in-Furness, England for the Orient Steam Navigation Company (Orient Line) for their Great Britain-to-Australia services via the Suez Canal.
 She was the final development of the 28,000 ton class which began with the SS "Orcades" of 1948 and continued with the SS "Oronsay" of 1951.
 In 1960, in conjunction with the introduction of the new larger and faster Oriana and Canberra, the fleets of Orient (which was majority owned by P&O) and P&O were combined as P&O-Orient Lines, although the Orient ships retained their corn-coloured hulls and sailed under their own house flag.
 In 1966, P&O acquired the balance of the Orient shares and the Orient Line was discontinued, with "Orsova" and her fleet mates being transferred to the ownership of the Peninsular and Oriental Steam Navigation Company (P&O), painted white and under the P&O houseflag.
The Australian United Steam Navigation Company (AUSNC) was an Australian shipping company from 1887 to 1961.
 It was formed by the merger of the Australasian Steam Navigation Company and the Queensland Steam Shipping Company and their fleets in 1887.
Calcutta and Burmah Steam Navigation Company (C&BSN) was formed in 1856 and was the immediate forerunner of British India Steam Navigation Company (BISN).
 The company was formed out of Mackinnon, Mackenzie & Co, a trading partnership of the Scots William Mackinnon and Robert Mackenzie, who had set up their business in Calcutta, India.
The Illawarra Steam Navigation Company was a shipping company that serviced the south coast of New South Wales, Australia from 1858 to the early 1950s.
 It was formed through the amalgamation of the General Steam Navigation Company, the Kiama Steam Navigation Company and the Shoalhaven Steam Navigation Company, each of whom serviced parts of the south coast with their respective vessels.
 After merging, the new company held a near monopoly in regard to shipping on the south coast, and their fleet visited every significant port between Sydney and the border of Victoria.
 The company transported both passengers and a range of produce, including livestock, and hence it became known as the 'Pig and Whistle Line': it was said that ships would wait an hour for a pig but not a minute for a passenger.
Hawaiian Airlines (Hawaiian: "" ) is the largest airline in Hawaii.
 It is the 8th largest commercial airline in the US, and is based in Honolulu, Hawaii.
 The airline operates its main hub at Honolulu International Airport and a secondary hub out of Kahului Airport on the island of Maui.
 Hawaiian Airlines operates flights to Asia, Hawaii, New Zealand, Australia and the United States Mainland.
 Hawaiian Airlines is owned by Hawaiian Holdings, Inc. of which Mark Dunkerley is the current President and Chief Executive Officer.
The North Coast Steam Navigation Company was a shipping company that operated in Australia, formed as the Grafton Steam Navigation Company in 1855.
 The company was later renamed the Clarence & Richmond River Steam Navigation Company before being renamed in December 1888 as the Clarence, Richmond & Macleay River Steam Navigation Company.
British India Steam Navigation Company ("BI") was formed in 1856 as the Calcutta and Burmah Steam Navigation Company.
 The company had been formed out of Mackinnon, Mackenzie & Co, a trading partnership of the Scots William Mackinnon and Robert Mackenzie, to carry mail between Calcutta and Rangoon.
 It became British India SN Co in 1862.
 Under the hand of Lord Inchcape, who had become chairman in 1913, the company became part of the P&O group of companies in 1914 through a complex amalgamation, but continued with its own identity and organisation for another nearly 60 years until 1972, when it was entirely absorbed into P&O.
Sir Edward Hain (December 1851 – 20 September 1917) was a leading shipping owner in Cornwall, England, and a politician who represented St Ives as a Liberal Unionist from 1900 to 1904, and as a Liberal from 1904 to 1906.
 His shipping company, Hain Line, was sold to the recently merged Peninsular and Oriental Steam Navigation Company and British-India Steam Navigation Company after his death.
Inter-Island Steam Navigation Company was a company headquartered in Honolulu that ran steam boat service between Hawaiian cities from 1883 until 1947.
 On January 30, 1929, the company founded a subsidiary, Inter-Island Airways, that would later become Hawaiian Airlines.
 Hawaiian Airlines today is a major airline.
Swadeshi Steam Navigation Company (SSNC), was one of the first indigenous Indian shipping companies setup during the Indian independence movement.
 It was started in 1906 by V O Chidambaram Pillai (popularly called as VOC) to compete against the monopoly of the British India Steam Navigation Company (BISNC), plying ships between Tuticorin and Colombo during the Indian freedom struggle.

Question: Where is the headquarters of the Inter-Island Steam Navigation Company that later became Hawaiian Airlines?
Answer: Honolulu