Some pretty decent miniature work here supervised by Lawrence Butler, although it suffers occasionally from being able to see the tank wall. Also a common deficiency in most submarine films is too great a visibility due to unrealistically clear water. There is also a very weak periscope shot with a painted ship that looks like a cartoon. One other split screen shot showing the effect of a flash powder charge detonating on the side of the Queen Mary clearly shows the sailors heads passing through the matte line.
Thanks to a reader Pete for putting me on to this film and for the link to this
page and website
http://www.moon-city-garbage.agency which has some very interesting articles and pictures on old school visual effects.
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| Sailors heads passing through the matte line of the superimposed explosion along the edge of the ship. |