Choosing a Mile Builder is not simply a matter of finding the longest voyage. The better match is the format that fits your recent sailing experience, the time you can spend aboard and what you want to be ready for next.
Phuket Sea School publishes seven-day and fourteen-day Andaman Cruise / Mile Builder formats from Phuket. Both are skipper-led, experience-building voyages with accommodation aboard. Routes are selected around weather, sea state, crew development and training objectives rather than treated as fixed sightseeing itineraries.
Start with a specific progression goal
“I need more miles” is a starting point, but it does not explain which experience would be most useful. Define the practical outcome you want before comparing durations.
Consolidate skills after a practical sailing course.
Become more comfortable contributing during a passage.
Develop passage-planning and navigation experience under a skipper’s supervision.
Improve consistency in helming, sail handling or crew communication.
Experience the routines and shared responsibilities of living aboard.
Build relevant experience before further training, chartering or an examination pathway.
These are possible development areas, not a guaranteed syllabus. The actual balance depends on the passage, conditions and crew, as explained in the school’s Mile Builder overview.
Describe your starting point, not only your certificates
Previous sailing experience is helpful for both formats. A certificate title alone, however, does not show how recently you sailed, how actively you participated or where you still need support. Give the school a concise and honest summary containing:
when and how frequently you have sailed recently;
your approximate days and miles at sea;
the yacht types and sizes with which you are familiar;
whether you normally sail as crew, navigator, watch leader or skipper;
your practical and shorebased training, including equivalent non-RYA experience;
the tasks you handle confidently and those you want to practise;
your intended next course, voyage, charter or examination.
This allows the school to assess suitability more usefully than a mileage figure alone. If you are also comparing formal courses, consult the guide to choosing the right sailing course.
Seven days or fourteen days?
Seven days: a concentrated period aboard
The 7-Day Andaman Cruise / Mile Builder provides seven days aboard the scheduled yacht. It may suit a sailor whose available time is limited and who wants a focused block of skipper-led passage experience.
Consider this format when one week is your firm limit or when you want to consolidate existing foundations before deciding on a longer voyage. Suitability still depends on your individual experience, and a seven-day booking does not promise a particular route, activity or mileage total.
Fourteen days: more continuity and scope for longer legs
The 14-Day Andaman Cruise / Mile Builder is a two-week experience-building format designed to allow longer legs and greater continuity. The additional time can support repeated involvement in passage routines and planning as circumstances develop.
It may be the better fit when immersion and an extended period of shared life aboard are important to your goal. Do not choose it on the assumption that two weeks guarantees a named destination, night passage, exact mileage total or qualifying passage. Current scheduling must be checked on the live calendar.

Compare opportunities to participate
Ask how you might contribute rather than treating the voyage as transport. Depending on conditions, operational decisions and the crew’s needs, possible activities can include:
preparing and reviewing passage plans;
chartwork, position monitoring and pilotage;
helming, sail handling and deck work;
watchkeeping and maintaining a log;
anchoring routines;
weather discussions, crew briefings and communication aboard.
Not every activity will feature equally on every voyage. The skipper has final authority over routing, timing, departure, anchoring and training activity, with decisions adjusted to conditions, crew experience and safe operating limits.
Mileage does not automatically establish qualification eligibility
If your goal involves a formal qualification or examination, say so before booking. Relevant schemes can assess several categories of experience rather than total mileage alone. The current RYA Yachtmaster Offshore examination guidance should be checked directly for its detailed rules.
Joining a Mile Builder does not itself confirm examination eligibility, award a qualification or guarantee that a particular passage will satisfy a requirement. Ask the school to review your existing sea time, supporting certificates and intended pathway individually.
Check whether liveaboard sailing suits you
Both published formats include accommodation aboard, prepared bedding, one onboard towel, simple breakfast and lunch, drinking water, tea and coffee. Some dinners may be provided aboard when the itinerary makes dining ashore impractical; dinners ashore, personal snacks and additional drinks are not included. Check the relevant product page for the complete current inclusion and exclusion list.
A passage also involves shared spaces, changing routines and participation in everyday life aboard. Read what to expect on a liveaboard sailing course and raise any dietary, health, mobility or other participation considerations privately with the school so that suitability can be assessed.
Keep the Andaman setting in context
These voyages operate from Phuket on Thailand’s Andaman coast. This is distinct from the Gulf of Thailand, Malaysia and India’s Andaman and Nicobar Islands. The school’s sailing-area guide provides regional context without fixing the route of an individual voyage.
Broad seasonal information can help with travel planning, but it cannot predict a future passage. Wind, rain, squalls, visibility and sea state vary. Use the guide to sailing seasons around Phuket as background rather than a route or weather promise.
A practical way to decide
The seven-day format may be the better starting point when:
one week is your firm time limit;
you want a concentrated block of experience;
you want to consolidate existing sailing foundations;
you prefer a shorter introduction to extended life aboard.
The fourteen-day format may be the better match when:
you can commit comfortably to two weeks aboard;
continuity and repetition are important to your development;
scope for longer passage legs is relevant to your goal;
you are ready for a longer shared-living commitment.
Choose the format for the experience it can help you practise, not for an assumed route, destination or mileage total.
Check the calendar and send a useful enquiry
Only published CourseRuns establish current dates and availability. Consult the live calendar rather than relying on an old departure list. A published product page does not by itself mean that a particular duration currently has a scheduled departure.
When enquiring, include your recent sailing experience, approximate sea time, usual role aboard, theory background, confidence gaps, progression goal, preferred dates and maximum available time. The school can then assess which format is the more appropriate match without promising a route, mileage total or qualification outcome.





