Both an approved B-V semi-portable fire extinguishing system and a fixed fire extinguishing system are required to protect the engine room on uninspected towing vessels whose construction was contracted for on or after what date?

Correct Answer: Option B — August 27, 2003

Title 46 CFR regulations governing uninspected towing vessels mandate both an approved semi-portable B-V system and a fixed fire extinguishing system in the engine room for vessels contracted on or after August 27, 2003, ensuring enhanced fire protection standards.