Visible crew/equipment: In the scene where Rafe and Evelyn are on the platform against the hull of the Queen Mary, just after it falls into the water and they are trying to balance themselves, if you look closely at the small boat they came in at that moment, for a brief second, you can see the silouette of the head and shoulders of a crewman pop up and duck back down either in or behind the boat.
Visible crew/equipment: In the scene where Rafe returns from England, Evie is busy with something. Camera slowly zooms out from Evie and moves right to show Rafe's reflection on the window. Look carefully. You can clearly see the red light of the camera reflecting back, not from the window that reflects Rafe, but the mirror on Evelyn's right.
Visible crew/equipment: During the scene where Danny and Rafe are being chased at low level by several Zero fighters, there is one camera shot where we can see past a P-40's tail at the Japanese attackers. The nearest Zero appears to have a strange object attached to the top of its fuselage, just in front of the tail. Presumably, this object is a remote-controlled camera which was used by the film-makers for the aerial combat scenes.