The catamaran departs Marina Pier at 19:30 every evening, slipping past the Victorian-era Holdfast Shores promenade as the Adelaide Hills darken to silhouette. Glenelg's maritime history runs deep: the jetty was rebuilt three times between 1857 and 1969, each iteration pushing farther into Holdfast Bay to accommodate deeper-draught vessels. By the 1970s the working port had given way to a leisure marina, and today the evening sailings carry a steady stream of visitors who come for the light rather than the cargo. The twilight window between 19:30 and 21:00 offers conditions that daytime sails cannot match. The offshore breeze softens as the land cools, and the water flattens to a near-mirror surface. The twin hulls of the catamaran cut through the bay with minimal roll, and the open deck allows unobstructed sightlines west toward the horizon and east toward the coastal suburb lights climbing the foothills. Bottlenose dolphins patrol the shallows at dusk, their dorsal fins breaking the surface in arcs that track the fishing boats returning to port. Glenelg sits 11 kilometres southwest of Adelaide's central business district, anchoring the city's coastline at the point where Holdfast Bay curves toward Brighton. The settlement was South Australia's first colonial landing site in 1836, predating Adelaide itself by months. Moseley Square, one block inland from Marina Pier, retains its original 19th-century grid and several stone buildings from the 1840s. The pier precinct was redeveloped in 2006 with a boardwalk, hotels, and a reconstructed tram terminus linking the beachfront to the city centre. The Glenelg twilight cruise operates year-round, with the departure time fixed at 19:30 regardless of season. In winter the sun sets before boarding; in summer it hangs low through the first half-hour of sailing. The two-hour route follows the coastline north past Glenwood and Henley Beach, then tacks southwest toward the open gulf before returning to Marina Pier. The drink service begins immediately after departure and continues throughout the voyage, with passengers moving freely between the shaded cabin and the bow netting. The skipper maintains a steady 8-knot pace, prioritising smooth passage over speed.