Why an OPV's hotel load includes accommodation and medical staffing

Isn't hotel load almost negligible as a share of a modern warship's electrical demand?

Electrical demand captures only part of it: accommodation takes hull space, and larger complements can require a doctor and other support.

Hotel load includes the hull space and services needed to accommodate a ship's people. Its significance cannot be judged solely from its share of electrical demand. Increasing the crew or passenger complement can cross thresholds that require a ship's doctor and additional support. A patrol vessel following rules such as Lloyd's must account for those requirements when new weapons and sensors bring more personnel aboard.