| Subclass V | Naval science (general) |
| Subclass VA | Navies: Organization, distribution, naval situation |
| Subclass VB | Naval administration |
| Subclass VC | Naval maintenance |
| Subclass VD | Naval seamen |
| Subclass VE | Marines |
| Subclass VF | Naval ordnance |
| Subclass VG | Minor services of navies |
| Subclass VK | Navigation. Merchant marine |
| Subclass VM | Naval architecture. Shipbuilding. Marine engineering |
https://www.loc.gov/aba/cataloging/classification/lcco/lcco_v.pdf