Final answer:
A drum, particularly the breasted drum from the Kuba culture, is a nonbulk vessel used for music and ceremonies, characterized by a detailed construction that signifies its cultural importance.
Step-by-step explanation:
A drum is an example of a nonbulk vessel. Drums are often used in the transportation and storage of both hazardous and non-hazardous materials in smaller quantities than those that are considered bulk. The drum you described, likely a historical or cultural artifact, serves a special purpose beyond simple storage. The depiction of a breasted drum from the Kuba culture indicates its use in music, dance, and ceremonial occasions, rather than for storage or transportation of goods or materials.
The information provided describes a drum designed not merely as a container, but as a musical instrument. Its crafted form, with breasts carved out of wood and a leather top, along with the practical design using sticks at 45-degree angles and rope to secure it, showcase its cultural significance. Given its role in the Kuba culture for music and ceremonial purposes, this particular drum, being a unique and specialized artifact, clearly fits the definition of a nonbulk vessel in this context.