Technical diver descending on a deep shipwreck in blue water

Technical diving expedition · 2 divers

Operation Deep Keys: Tec 45 Adventure

Helsinki → Miami → Key Largo | Nov 28 – Dec 5, 2026

Countdown to departure · AY007 HEL 13:00

--
Days
--
Hours
--
Min
--
Sec

The route

Miami to the reef line

Chart of the Florida Keys showing the route from Miami to Key Largo and Key WestMIAKey LargoKey West

MIA

Arrival & departure hub

Key Largo

Base — Reefhouse Resort, 7 nights

Key West

Day trips ↔ Vandenberg & reefs

Trip overview

Logistics suggestion

Flights

  • AY007 · HEL → MIA
  • AY008 · MIA → HEL
  • Business Flex
  • Booked · 2 adults
Check Finnair prices

Booked · earns ~55k Avios

Accommodation

  • Reefhouse Resort & Marina, Key Largo
  • 103800 Overseas Hwy
  • 2 rooms · King, partial bay view
  • Booked · itinerary 72079288425536
View hotel

7 nights · 28 Nov – 5 Dec

Transport

  • Sixt · MIA Rental Car Center
  • Toyota RAV4 or similar, automatic
  • Unlimited mileage · 2nd driver added
  • Booked · 28 Nov 18:30 → 5 Dec 18:30

Base: Key Largo

Dive Requirements

  • PADI Tec 45
  • Decompression procedures
  • Twinset + stage
  • Horizon Divers, Key Largo
  • Key West: recreational single tank only
Horizon Divers

Max depth 45 m

Day by day

Dive log — fifteen dives

15

Planned dives

10

Boat sessions

40 m

Max depth

Spiegel Grove

Signature wreck

  1. Nov 28 (Sat)Surface day

    Departure Helsinki → Arrival Miami

    AY007 departs Helsinki 13:00 (EET). Land MIA 17:30 local. Sixt pick-up at the MIA Rental Car Center at 18:30 (MIA Mover train from arrivals level 3), then drive to Key Largo (1 h 15 m). Check in at Reefhouse Resort & Marina — reception open, check-in from 16:00. Light dinner, early night — no diving.

    No dives

    Travel day — flying, no diving

    AY007 · HEL 13:00MIA 17:30Sixt 18:30Drive 1 h 15 mCheck-in Reefhouse
  2. Nov 29 (Sun)4 dives

    Tech Day 1 — Key Largo

    Two Horizon Divers sessions. Morning check-in 08:00 (back by 12:30) on USCGC Duane and USCGC Bibb — gas planning, valve drills and deco discipline. Afternoon check-in 12:30 (back by 17:00) on two shallower wrecks.

    • Morning session · check-in 08:00 – 12:30

      DIVE 0130 mShort dive

      USCGC Duane

      Gas planning + valve drills

    • DIVE 0224 mShort dive

      USCGC Bibb

      Deco discipline, shorter runtime

    • Afternoon session · check-in 12:30 – 17:00

      DIVE 0314 mShort dive

      Benwood

      Easy wreck, trim and buoyancy

    • DIVE 048 mShort dive

      Christ of the Abyss

      Relaxed second dive, off-gassing

    Horizon Divers2 sessions
  3. Nov 30 (Mon)2 dives

    Tech Day 2 — Key Largo

    Spiegel Grove day: one long dive per session, no penetration. Morning check-in 08:00 for the deep structure, afternoon check-in 12:30 for the upper decks.

    • Morning session · check-in 08:00 – 12:30

      DIVE 0540 mLong dive

      USNS Spiegel Grove

      Deep structure exterior tour, long deco stops

    • Afternoon session · check-in 12:30 – 17:00

      DIVE 0634 mLong dive

      USNS Spiegel Grove

      Upper decks, conservative runtime

    Horizon Divers2 sessions
  4. Dec 01 (Tue)3 dives

    Key West Excursion

    Two Key West boat trips — recreational single tank only. No tech operator in Key West any more and Horizon does not rent off-site, so the Vandenberg is a short no-deco visit rather than a long dive. Evening cigar stop at Greene Street Cigar Co. One light drink only; we drive back.

    • Morning trip · 1 dive

      DIVE 0729 mShort dive

      USNS Vandenberg

      Brief deck visit, rec limits, no deco

    • Afternoon trip · 2 dives

      DIVE 0828 mShort dive

      Cayman Salvage Master

      Upright wreck, moderate current, rec profile

    • DIVE 099 mShort dive

      Eastern Dry Rocks

      Shallow reef, off-gassing

    Key West boats2 tripsRecreational · single tankGreene Street Cigar Co.
  5. Dec 02 (Wed)2 dives

    Key West Deep Reefs

    One Key West boat trip, two recreational dives. Western Sambo then Sand Key depending on conditions — single tank, relaxed no-deco profile. All doubles and deco diving happens back in Key Largo.

    • Morning trip · 2 dives

      DIVE 1030 mShort dive

      Western Sambo

      Deep reef edge, rec limits, conditions permitting

    • DIVE 1118 mShort dive

      Sand Key

      Long bottom time, off-gassing

    Key West boats1 tripRecreational · single tank
  6. Dec 03 (Thu)3 dives

    Local Tech Practice

    Two Horizon Divers sessions. Morning check-in 08:00 for one long dive on Spiegel Grove (or Cayman Salvager if the boat schedule shifts), afternoon check-in 12:30 for two short reef dives to offgas.

    • Morning session · check-in 08:00 – 12:30

      DIVE 1240 mLong dive

      Spiegel Grove / Cayman Salvager

      Exterior tour + wreck photography

    • Afternoon session · check-in 12:30 – 17:00

      DIVE 1312 mShort dive

      French Reef

      Swim-throughs, photo practice

    • DIVE 1414 mShort dive

      Molasses Reef

      Relaxed reef dive, offgassing

    Horizon Divers2 sessionsPhotography
  7. Dec 04 (Fri)1 dive

    The "No-Drive" Finale

    One last Horizon Divers morning session (check-in 08:00), then "Debauchery Mode" dockside at Reefhouse Resort & Marina — cocktails, cigars and fire pits, dinner on the waterfront. Nobody touches the car.

    • Morning session · check-in 08:00 – 12:30

      DIVE 1512 mShort diveOptional

      Shallow house reef

      Easy final dive

    Horizon Divers1 sessionMarina barWaterfront dinnerNo driving
  8. Dec 05 (Sat)Surface day

    Departure Miami

    Leisurely breakfast, pack the gear and drive to MIA (1 h 15 m). Flight AY008 departs 17:30 local. 24 h+ of surface interval before wheels up.

    No dives

    Surface interval 24 h+ before flying

    Drive 1 h 15 mAY008 · MIA 17:30
  9. Dec 06 (Sun)Surface day

    Arrival Helsinki

    AY008 lands in Helsinki 09:35 (EET) after the overnight crossing. Gear home, logbooks filled

    No dives

    Home — no diving

    AY008 · HEL 09:35Overnight flightTrip ends

Dive ops — Horizon Divers

Confirmed by Horizon Divers. Key West has no tech operator and Horizon does not rent tanks off-site, so all doubles and deco diving happens in Key Largo.

Trips & schedule

  • Morning trip departs 09:00 · check-in 08:00 · back 12:30
  • Afternoon trip departs 13:30 · check-in 12:30 · back 17:00
  • Spiegel Grove: max 40 m, both dives at the same site — one long deco dive allowed
  • No in-water guide by default · optional guide $25 pp for 2+ divers
  • Free cancellation outside 24 h · bring cert cards · online waiver in the trip month

Gear & pricing (USD, + sales tax)

  • Back-mounted doubles: available, first come first served — not guaranteed
  • Deco cylinders: available
  • Nitrox 30%: $15 per tank · full rental gear set: $40
  • Single trip $105 · punch cards 3 / $268 · 5 / $420 · 10 / $788
  • Punch cards are per person, not shared
Horizon Divers

Budget tracker

Estimated spend

Per person · 1 diver

Flights

AY007 / AY008, Business Flex · booked

€5,950

Hotel

Booked · Reefhouse, 7 nights × 2 rooms, incl. taxes & $40/night resort fee · €650 due 21 Nov, €3,564 on arrival

€2,387

Rental Car

Booked · Sixt RAV4, €286 paid + $105 additional driver at desk

€191

Diving

Key Largo: 5-trip punchcard + 2 singles (tech) · Key West: 3 rec trips · sales tax, nitrox & deco cylinders extra

~€855

Food & Drinks

8 days · ~€70 per person / day

~€560

Estimated per person

~€9,950

All figures in EUR (USD costs converted at ~1 USD = €0.92). Points offset ~110k Avios earned and ~30k Hilton Honors points redeemed.

Action items

Before we fly

Pre-trip actions

0/7