Helm Architecture Diagrams: Single Helm Quad‑Engine QESH DTS ‑ Dual Console ERC 4 21 20 X 19 5 18 17 5 X 16 15 3 13 14 12 12 12 12 2 11 X 10 5 5 6 X H 8 7 9 1 71170 Page 6A-24 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021