49m
    Istria Peninsula, Croatia
    Otok Zeča

    HM MTB 655

    Best months: Jul–Aug

    Protected Area

    Otok Zeča

    Why dive here

    With 46+ marine species recorded in the area - including dolphins, sea turtles and cuttlefish - HM MTB 655 offers some of Istria Peninsula's richest wreck diving. Water ranges 12-26°C, warmest July, August, September.

    Best timeJul–Aug
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeDolphins, Sea Turtles and Cuttlefish · 46+ species recorded
    Water12-26°C · warmest July, August, September
    CharacterWreck dive · max 49m

    The HM MTB 655 isn’t your average Croatian wreck. This torpedo boat, sunk in 1945, rests upright at 49m, making it a serious technical dive. What we love about her is the immediate sense of history; you can almost hear the rumble of her engines. Descending through the blue, the wreck materialises slowly, her lines still sleek despite the passage of time. At 33.5m long, she’s a compact but incredibly atmospheric dive. We typically start our exploration around the bow, where the damage from the mine strike is still evident. From there, we work our way along the deck, peering into the open hatches that hint at the machinery below. Shoals of small fish, usually silversides or juvenile sea bream, flicker around the superstructure, and we’ve often spotted lobsters tucked into crevices. The visibility here can be spectacular, sometimes stretching to 30m, which really allows you to appreciate the scale of the wreck as you circle her. Our favourite spot is usually the stern, where the twin propellers are still perfectly intact, a testament to the build quality. She’s definitely one for advanced wreck enthusiasts comfortable with deeper profiles and decompression. Go early to avoid any boat traffic, the surface can get busy.

    Typical HM MTB 655 Dive Profile

    15m30m45mSafety Stop0m49m max~15 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

    Maximum depth 49m exceeds recreational limits (40m). Technical diving certification and equipment required.

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

    Always perform a 3-minute safety stop at 5m before surfacing.

    Today06:1417:2811h 14m daylightGolden hour 16:48

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    Conditions

    Ocean conditions, forecast and tides for HM MTB 655

    HM MTB 655 Ocean Conditions

    Monthly averages for HM MTB 655, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (45.08, 14.15) (21km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    20°C

    68°F · Range: 18.4–22.3°C

    Current Speed

    3.16 cm/s

    Direction: W (288.4°)

    Salinity

    37.74 PSU

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)

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