The Water Horse: Legend of The Deep - Poetic License

Poetic License

The film does take some liberties with Scottish geography:

• The opening shot is of Eilean Donan Castle which is on the west coast of Scotland, some 35 miles west of Loch Ness.
• A panning shot past Urquhart Castle (which is on the shore of Loch Ness) reveals some large islands in the loch, but Loch Ness contains no such islands.
• The film plot has Loch Ness opening directly into the sea via a wide channel between high cliffs, making it a saltwater loch. In fact, Loch Ness is a freshwater loch with its surface some 80 ft above sea level, and is connected to the sea (about 5 miles to the north) by the shallow River Ness, which flows through the City of Inverness. For this reason, anti-submarine nets would not have been needed on Loch Ness, as no submarines would have been able to navigate the river, even if there had been important military targets in the loch (which there weren't); the actual operation of the anti-submarine nets shown in the film owes little to reality.
• During the underwater sections the Loch has fairly clear waters. In reality Loch Ness has very opaque waters, with visibility mostly being a lot less than 5m.

The film also has some chronological inconsistencies:

• The production of the "Surgeon's Photograph" of the monster is shown as part of the plot, though this photo was originally published in 1934. In the film, the "Surgeon" is unable to catch a photo of the actual monster, and instead rigs up a fake monster for purposes of the photograph.
• Angus has a toy ship which is clearly seen and is the SS United States – but this ship was not built until 1952.