Complex sentence: Unlike her quasi-sister ships, "Jupiter" and "Juno", "Saturn" s bridge was constructed one deck above the upper passenger deck, giving passenger access right round the front of the ship, allowing views directly over the bow.
Split into simpler sentences: Unlike her quasi-sister ships, "Jupiter" and "Juno", "Saturn" s bridge is one deck above the upper passenger deck. Passengers therefore have access right round the front of the ship, allowing views directly over the bow.