Second Course (Gold Rush Pack)
From the Super Mario Wiki
Throughout most of the level, Mario must ride an airship identical to the one seen in World 5-A, except in a seaside-like area instead of the sky. The first section features a lone Koopa Troopa, along with Cheep Cheeps that leap out of the water. A Roulette Coin Block then appears, followed by a Gold Ring. Afterwards, a POW Block appears and can be hit to reveal three Golden Mushrooms. Two more Gold Rings appear, followed by the Goal Pole.