<sod>The original design of tender, which came to be known as Type 'A' was designed for the first ten streamlined locomotives. These were of welded tank construction and included side sheets extending from the rear of the tender, presumably to prevent drag from eddies between the tender and the leading coach. 28 of these were constructed to be coupled with all the 24 streamliners (Nos. 6220-6229 and Nos. 6235-6248) as well as four of the unstreamlined locomotives (Nos. 6249-6252). In practice, the side sheets made it more difficult to access the water filler as well as the couplings.{{sfn|Jenkinson|1982}}{{page needed|date=October 2016}}<eod>
<sod>The original design of tender, which came to be known as Type 'A' was designed for the first ten streamlined locomotives. These were of welded tank construction and included side sheets extending from the rear of the tender, presumably to prevent drag from eddies between the tender and the leading coach. 28 of these were constructed to be coupled with all the 24 streamliners (Nos. 6220-6229 and Nos. 6235-6248) as well as four of the unstreamlined locomotives (Nos. 6249-6252){{sfn|Jenkinson|1982|pp=2-3}}. In practice, it would seem that the side sheets made it more difficult to access the water filler as well as the couplings.<eod>