# sectional density

> value calculated by taking the total mass divided by area cross sectional area; used in projectile and speed boat design

**Wikidata**: [Q1392786](https://www.wikidata.org/wiki/Q1392786)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Sectional_density)  
**Source**: https://4ort.xyz/entity/sectional-density