Cambrils has dispatched fishing boats from Passeig Miramar since Roman garrisons fortified this stretch of Tarragona's coast two millennia ago. The modern catamaran fleet anchored at the port represents a newer maritime tradition — twin-hulled vessels designed for stability in Mediterranean swells, their wide decks accommodating up to forty passengers who gather each evening to watch the Costa Dorada shoreline turn amber under descending sun. The Balearic route that once carried olive oil and wine now traces a leisure circuit: catamarans depart the harbour at calculated intervals, their shallow draught allowing close approach to coves inaccessible by keel boats. The sunset departure window capitalizes on thermal wind patterns that calm after 18:00, when daytime onshore breezes subside and the sea flattens to a navigable mirror. Captains navigate beyond the breakwater toward Salou's headland, maintaining a coastal bearing that keeps the Pyrenean foothills visible to starboard. The twin-hull design eliminates the roll that plagues monohull vessels, creating a stable platform for passengers moving between the trampoline nets stretched across the bows and the shaded cockpit where open bars dispense cava and beer. Swimming stops occur at designated anchorages where depth sounders register six to eight metres — shallow enough for confident swimmers, deep enough to deter casual wading. The vessel's operational hours reflect harbour authority regulations that require all recreational craft to return before 20:00, when navigation lights become mandatory and the commercial fishing fleet begins its nocturnal departure. This constraint has shaped the product: two-and-a-half-hour cruises timed to capture the forty-minute window when the sun descends through fifteen degrees above the horizon, painting the limestone cliffs of the Costa Dorada in graduated tones of rose and copper. The Cambrils catamaran fleet operates daily from April through October, scaling frequency to match occupancy rates that peak in July and August when the route becomes a structured ritual — boarding at 18:00, clearing the harbour by 18:15, dropping anchor for a swim by 18:45, then motoring northward as the sun touches the waterline at 19:30.