(1) Search light(2) Aerial wire intake
(3) Ventilators to aft dynamo room or auxiliary machinery compartment (maybe)
(4) Skylight of ward room
(5) Ventilator to Steering compartment
(6) Hatch#8 (torpedo hatch)
HIJMS MIkasa had become Museum Mikasa in 1926.
After the World War II, almost all structures of Mikasa were removed or destroyed
by persistent claim of the Soviets.