ION (Astréa 42)
2021 · 12.6 m · 6 cabins · 10 berths
Photos supplied by the operator. Specifications are SailChecker-Verified , but images may show a sister yacht or stock photography, especially on yachts under two years old. Confirm the actual boat with us at quote time.
Weekly prices€4,550 · 30 Oct – 27 Nov
Price across the season
Weeks near your dates
Specifications & Equipment6 cab · 10 berths · 5 wc
What KateBot thinksStrengths and trade-offs
Perfect for groups This 2021 Astréa 42 catamaran comfortably sleeps 10 across six cabins, making it ideal for families or friends wanting to explore together without feeling cramped. The relatively recent build year and well-spec'd equipment suggest solid build quality and reliability.
Smart onboard features You're getting genuinely useful kit here, water maker, solar panels, and generator mean good self-sufficiency, while the hydraulic gangway and electric toilets add comfort touches often missing on smaller charters. Air conditioning throughout, teak deck, and barbecue setup signal this is built for relaxed, easy cruising.
Honest value question The €4,000 deposit is reasonable, but without seeing the weekly rate, it's hard to judge true value. That said, for a 2021 catamaran with six cabins at this size, you're likely looking at competitive pricing, catamarans generally offer better space-per-euro than monohulls.
One caveat The operator (Sea Alliance Group) shows only two reviews so far, which isn't much to go on for peace of mind on a long-haul booking. Before committing, get references or recent feedback directly from the company, especially important if you're flying internationally to reach this base.
KateBot is SailChecker's AI sailing assistant, trained on Kate's real charter correspondence. Kate and the human team still review every booking, KateBot drafts, Kate decides.
Where Charters WentTop Stop: Ermioni, 45% of trips
Here is where charter yachts tracked by AIS spent their nights on round trips from Saronic and Argolic islands during the 2025 season. The heat map brings those recorded overnight stops together so you can compare past activity with your own yacht charter plans. It is not a navigation guide.
Spetses was the most common first night out, at 22% of trips with a recorded first night. On 43% of trips, the furthest point from base was within under 20 nm, measured in a straight line.
Have a look at the full map and compare the overnight stops before choosing a route. If you're considering this type of boat for a yacht charter from Saronic and Argolic islands, we're happy to talk through your plans.
Where tracked sailing boats went on round trips from Saronic and Argolic islands, 2025.
These figures are for the area, not this boat's own record.
Observed hourly positions · one observed fix per boat-hour; missing hours omitted; colour is relative within this view.
Top Overnight Stops
- Ermioni45%
- Nafplio21%
- Baltiza14%
The percentage is the share of trips that spent at least one night there.
The marina & destination Porto Heli · Greece
Based at Porto Heli, Greece . ION is operated by Sea Alliance Group.
Good to know
- Location
- Porto Heli · Greece
- Licences
- Bareboat skipper licence (RYA Day Skipper, ICC, or equivalent) and VHF licence are required, plus a co-skipper or second crew member with a sailing CV. Greek authorities check both at the marina.
- Security deposit
- €4,000
- Cancellation
- Cancellation terms are operator-specific and disclosed in the charter contract before payment. As a rule, most Mediterranean operators retain the full charter fee within 30 days of departure; we recommend charter cancellation insurance (typically 4-5% of the charter fee).
Getting there4 airports nearby
The nearest international airports for this base, with a quick note on which suits which marina. Final transfer arrangements are confirmed at quote time.
Saronic Gulf bases (Alimos, Kalamaki): Athens Eleftherios Venizelos is 25 minutes from the marinas.
Ionian bases: Lefkas, Meganisi. Limited direct flights; many people connect via Athens or Corfu.
Dodecanese: Kos, Symi, Leros bases. Daily summer charters from northern Europe.
Cyclades: Mykonos and Paros bases. Pricey in peak season.
Possible routes3 hand-picked itineraries
A starting point, not a script: pick one as a template and we'll tailor the dates, stops, and pace to your crew.
Saronic Gulf
Short legs, reliable wind, history at every stop. Best first-charter route in Greece.
1Athens (Alimos)
2Aegina
3Poros
4Hydra
5Spetses
Cyclades
Meltemi wind July-August. Plan for one weather day, and book the marina in advance for the islands you do not want to miss.
1Athens
2Kea
3Paros
4Naxos
5Mykonos
Ionian
Light, predictable winds. Easiest sailing in Greece, most-loved by families and first-timers stepping up.
1Lefkas
2Meganisi
3Ithaca
4Kefalonia
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