Sushi made by wrapping dried seaweed around rice and after placing delicate fillings such as salmon roe, sea urchin, etc. in the rice is called 'battleship roll sushi,' but, this is considered as a kind of Nigiri-zushi.
なお握った飯の側面に海苔を巻き、上にイクラ、ウニなど崩れやすい材料を乗せたものを「軍艦巻」と呼ぶが、これは握り寿司の一種として扱われている。