Shotline Diving Wreck Profile
- Name: Niagara II (formerly Rideaulite, Imperial Lachine, Niagara, W.M. Edington)
- Type: Artificial Reef / Wreck
- Year Built: 1930
- Builder: Imperial Oil Ltd.
- Dimensions: Length: 175 ft (53.3 m); Beam: 35.2 ft (10.7 m); Depth: 12.9 ft (3.9 m)
- Registered Tonnage: 723 Gross Tonnage, 343 Net Tonnage
- Depth at Wreck Site: 33 m / 100 ft
- Location: Off Tobermory, Ontario
- Coordinates: N 45° 15.052′ W 081° 36.030′
- Official Number: C 155286
- Original Owners: Imperial Oil Ltd., Holden Sand & Gravel Ltd., McKeil Marine Ltd.
- Number of Masts: None
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