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The Neptune Factor (1973)

G | | Sci-Fi | 3 August 1973 (USA)
When an underwater ocean lab is lost in a earthquake, an advanced submarine is sent down to find it and encounters terrible danger.




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1 nomination. See more awards »


Cast overview, first billed only:
Cmdr. Adrian Blake
Dr. Samuel Andrews
Chief Diver Don MacKay
Dr. Leah Jansen
Diver Bob Cousins
Chris Wiggins ...
Capt. Williams
Dr. Hal Hamilton
Diver Dave Moulton
Leslie Carlson ...
Brigs, Triton Radioman
Diver Phil Bradley
Ed McGibbon ...
Dr. Norton Shepherd
David Renton ...
Warrant Officer
David Yorston ...
Diver Stephens
Diver Thomas


Aboard the R/V Triton, the Project Neptune team is doing oceanographic research. Director Andrews is trying to keep the research going in spite of opposition from Foundation Head Sheppard. Below on the ocean floor, in the Sealab, the team led by Hamilton is about to return to the surface when the Sealab is ripped loose from it's moorings and sent careening into a trench. Trapped too deep for divers, the only chance is rescue by a new US Navy mini-sub, piloted by the arrogant Cdr Blake USN. Blake, Chief Diver MacKay, Diver Cousins & Dr. Jansen (Hamilton's fiance) dive in the mini sub to attempt the rescue of the trapped Hamilton & crew. Written by Robb Mavins <rmavins@mb.sympatico.ca>

Plot Summary | Add Synopsis






G | See all certifications »




Release Date:

3 August 1973 (USA)  »

Also Known As:

Conquest of the Deeps  »

Filming Locations:


Box Office


CAD 2,500,000 (estimated)

Company Credits

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Technical Specs


Sound Mix:


Aspect Ratio:

2.35 : 1
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Did You Know?


More than forty technical consultants from the Canadian Armed Forces, the Bedford Institute of Oceanography, and the Royal Ontario Museum as well as representatives from industries involved in various aspects of the undersea world participated in the making of this film. See more »


A black-suited diver is briefly shown assisting 2 others to depart from the lab in a mini-sub. He's not one of the characters, and disappears from the scene when the next diver (Yvette Mimieux) exits the lab to follow the sub. See more »

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User Reviews

Of fish and boredom
13 April 2006 | by (United States) – See all my reviews

This waterlogged bore is about 100 minutes but feels about 120 minutes too long. A film so dull even the cast can't rouse itself from lethargy. Yvette Mimieux evidently decided her paycheck was only enough to guarantee that she'd show up, because her performance consists of only one half-lost/blank stare throughout. Borgnine, once again in the water (McHale, Poseidon, etc.) can barely rouse himself to his usual level of histrionics. Gazzara tries a southern accent and fails, while Walter Pigeon plods through his role, obviously taking his check to pad his retirement fund (he actually turned in a fine performance the following year in 'Harry in Your Pocket'). This is a Canadian film, thus it's restricted budget-wise, but why bother making a film like this if you haven't got the money for the special effects? We're talking $1.98 here. It looks like the producers bought a little toy submersible and borrowed someone's aquarium and let er rip. Okay, this is pre-Star Wars, effects-wise, but no one could take this seriously even back in 1973. Oh the look of fear and awe on Borgnine's face when he sees a.... giant goldfish! Perhaps the only thing of (minor) interest is whether James Cameron was inspired by this film to create 'The Abyss.' It does have some of the same elements. Of course, unlike 'The Abyss', this film is idiotic (example: Gazzara yelling at Mimieux for putting the sub in danger of exploding from sea pressure, yet the same pressure has no effect on HUMAN BODIES swimming around in EVEN GREATER DEPTHS soon after), and it's dully plotted, acted, directed, written, scored. Well, it IS consistent!

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