These pdf files can be printed out on regular printer. The first file prints the Eastern (right half) of Bowditch Bay (print on 8.5 x 11) and the Western (left half), both on 8.5x11. Both halves will combine to give the full chart, 11 x 17
The second file prints the full Bowditch Bay on 8.5 x 11. If you have access to a larger printer (like an office supply store), you should be able to print on an 11x17 sheet. The files are in color, but you can print them in B&W and still use them for HW.