Southampton Corporation Tramways No. 45, or Southampton 45, is an open-top tramcar. It was built in 1903 by Hurst Nelson. At first it had a three window saloon, before being rebuilt by Southampton Corporation Tramways with a four window one. The tram looks out of proportion as it had to pass through the very low Bathgate Arch in the centre of Southampton. A normal sized tram would not have been able to have passed underneath the arch.