Planning for an Offshore Passage
Your Offshore Instructor will coach you through the process of completing the take-home assignment that demonstrates all aspects of planning for an offshore passage that should be undertaken by a prudent sailor

Sailing Courses › Intra-Caribbean Offshore
Earn ASA 108 / Sail Canada Offshore in the Caribbean
We run our Intra-caribbean offshore courses several times per year. Since celestial navigation is a prerequisite for Offshore Cruising, we offer guidance on self-study resources for acquiring ASA 107 or 117, or Sail Canada Celestial Navigation. We can administer the ASA 107 or 117 exam at the beginning of, or during, the offshore course. We also offer the possibility of ASA 106 and 105 certification on this course.
The courses are 7 days/6 nights, and cover ~500 NM in and around the Caribbean in a continuous passage.
Your Offshore Instructor is Rob McLean, who has taught at BOSS since 2018. Rob is certified as an Offshore and Celestial Instructor with ASA and as a Sail Canada Offshore Instructor. For details on Rob’s extensive offshore experience, see his sailing resumé at: robmclean.ca/sailingresume.html
Please review the relevant standards as linked below:
In accordance with these standards, BOSS Offshore Cruising Courses have four main components:
BOSS is recruiting 3-6 participants for each Offshore Course. A minimum of three participants is required to maintain a continuous watch schedule. Preferably, participants will be seeking Offshore Cruising certification according to ASA or Sail Canada standards, and will participate in self-study and online training prior to the passage, and practical on-water training during the passage.
Participants seeking certification should have ASA or Sail Canada Advanced Cruising as a prerequisite, and must already have a prior celestial certification or be prepared to write a celestial exam prior to departure. For otherwise experienced sailors, it may be possible to obtain an Advanced Cruising certification while on the Offshore Passage.
If space permits, BOSS will consider participation by experienced sailors who wish to join one or more legs for the offshore experience and are not seeking ASA or Sail Canada certification.
Further details on pre-requisite qualifications, required personal safety equipment, and the BOSS Crew Agreement and BOSS Course Contract will be provided to those expressing interest. Regardless of qualifications, all prospective participants will be interviewed by Rob McLean and are subject to approval by BOSS and Rob McLean.
Course outline
Day 1, Sunday
Anchor for the night, complete celestial exam
Day 2, Monday
~100 NM
Day 3-4, Tuesday / Wednesday
~150 NM
Day 5, Thursday
~125 NM
Day 6, Friday
~125 NM
Day 7, Saturday
Offshore Cruising
Your Offshore Instructor will coach you through the process of completing the take-home assignment that demonstrates all aspects of planning for an offshore passage that should be undertaken by a prudent sailor
Your Instructor will guide you through the process of acquiring all the prerequisites required for your Offshore ASA or Sail Canada certification, including Celestial Navigation
The on-water component of your Offshore Cruising course will enable you to acquire and practice the skills needed by an offshore sailor, and the experience gained will build the confidence you need to skipper your next offshore passage on your own.
Price includes
Because some people wish to participate in our offshore courses for the experience without necessarily wishing to obtain official ASA or Sail Canada certification, our pricing structure for Offshore Cruising has two main components. 1. Base Participation Fee: for our week-long Intra-Caribbean Offshore experience, the Base Participation Fee is $4,495.