Along Turkey's southwest coast, the classic sailing holiday hasn't really changed in a century. You board a wide-beamed wooden gulet, anchor in a quiet bay by mid-morning, swim off the stern, eat a long lunch under the awning, and decide around four o'clock whether to move on. This is the Blue Voyage, an idea that took hold when a writer exiled to Bodrum started exploring the bays and wrote about them so persuasively that others followed.

What has changed is the boat. The gulets built in the yards around Bodrum and Marmaris have quietly become serious luxury vessels: air conditioning, en-suite cabins, and on the newer builds jacuzzis, spa corners, beach clubs, cinema rooms and a full rack of water toys — all wrapped in a hull that still looks like it belongs on this coast. The best of them now hold their own against any modern superyacht, with a warmth the glass-fibre boats can't match.

The cruising ground is the Turquoise Coast, running from Marmaris and Fethiye towards Kas, with Göcek's sheltered, island-dotted gulf a popular starting point. The highlights are best reached from the water: Butterfly Valley near Ölüdeniz, a cove walled in by cliffs; Kekova, where you view a partly submerged Lycian town from the tender; the cliff-cut tombs and turtle beach at Dalyan; and Cleopatra Island in the Gulf of Gökova, famous for sand supposedly shipped in from Egypt.

But the argument here is that the itinerary matters less than the yacht itself. The crew come first — a captain who knows every bay, a cook who shops at local markets so the mezze and grilled fish change as you move along the coast, and deckhands who look after you without hovering. Cabin design, ventilation, deck space built for lounging and a recent refit all matter too. From a photograph, a top gulet and an average one can look identical; the difference shows up in how long the crew have worked together and how smoothly the week runs when plans change.

If you're considering a charter, a few practical checks go a long way. Ask whether the booking runs under a MYBA agreement, the industry standard contract covering what's included and how payments work. Ask whether whoever is recommending the boat has actually been aboard and met the crew, how long that crew has been together, and whether everyone on board speaks comfortable English.

Who is this for? Families and groups of friends mainly — gulets are sociable, low-slung boats with generous deck space, so a group can spread out without crowding. Cabin counts vary widely, from boats suited to a couple to ones that handle a big family celebration. The season runs May to October, with June and September the sweet spots: warm water, softer light and fewer boats in the bays. July and August are hotter and the best gulets book out first, and the Bodrum area can get breezy in high summer — late spring or September brings the calmest water.

Get the boat right and the week largely runs itself: swim, eat, sleep, repeat.