HMCS Mackenzie
Protected Area
Kellett Bluff Voluntary No-take
Why dive here
With 35+ marine species recorded in the area - including humpback whales, orcas and seals & sea lions - HMCS Mackenzie offers some of Pacific Northwest's richest wreck diving. Water ranges 7-17°C, warmest July, August, September.
The HMCS Mackenzie is one of our favourites in the Pacific Northwest, especially when the conditions line up. Dropping down, you’re immediately enveloped by the sheer scale of the ship. We love exploring the bridge area, where enormous lingcod often lurk in the shadows, unbothered by divers. The deck guns are still intact, draped in plumose anemones, their white tentacles waving gently in the surge. Look closely for giant pacific octopuses tucked into crevices in the superstructure; they’re masters of camouflage here. Penetration is possible for trained wreck divers, with plenty of swim-throughs to explore the interior spaces. The engine room is particularly atmospheric, a maze of pipes and gauges now serving as apartment blocks for rockfish. Visibility can be hit or miss, typical for the PNW, so we always aim for slack tide on an incoming current to catch it at its best. It’s a site that changes with every dive, always revealing a new corner or a different resident.
Typical HMCS Mackenzie Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Cold water this month (avg 11°C). Drysuit or thick wetsuit (7mm+) recommended.
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Conditions
Ocean conditions, forecast and tides for HMCS Mackenzie
HMCS Mackenzie Ocean Conditions
Monthly averages for HMCS Mackenzie, sourced from NOAA NDBC + Copernicus Marine (EU) - nearest station: 9449880 - Friday Harbor, WA (27km away)
October Averages
Sea Temperature
11°C
53°F · Range: 9.6–11.4°C
Air Temperature
11°C
51°F
Current Speed
3.16 cm/s
Direction: E (108.4°)
Salinity
23.61 PSU
Wind Speed
1.8 m/s
3.5 knots
Atmospheric Pressure
1018.3 hPa
Based on 5 years of monitoring data · Data sources: NOAA NDBC + Copernicus Marine (EU)
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