If a [person] does not keep pace with [their] companions, perhaps it is because [they] hear a different drummer. Let [them] step to the music which [they] hear, however measured or far away. Henry David Thoreau (1817 – 1862)
For the 6″deadlights” (non-opening ports) we made steel frames so that on the flat ones we could use 1/4″ laminated safety glass. the front two are curved and have polycarbonate panes.