3.1m
    Pacific Northwest, United States
    Kellett Bluff Voluntary No-take

    HMCS Mackenzie

    Best months: Sep–Jan

    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.

    Best timeSep–Jan
    WetsuitA drysuit
    Marine lifeHumpback Whales, Orcas and Seals & Sea Lions · 35+ species recorded
    Water7-17°C · warmest July, August, September
    CharacterWreck dive · max 3.1m

    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

    Safety Stop0m3m max~60 min estimated bottom time

    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.

    Today06:2617:3511h 9m daylightGolden hour 16:53

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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)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    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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