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.

Eden is a coastal town in the South Coast region of New South Wales, Australia. The town is 478 kilometres (297 mi) south of the state capital Sydney and is the most southerly town in New South Wales, located between Nullica Bay to the south and Calle Calle Bay, the northern reach of Twofold Bay, and built on undulating land adjacent to the third-deepest natural harbour in the southern hemisphere, and Snug Cove on its western boundary. At the 2016 census, Eden had a population of 3,151.