6 Ways to Achieve Your 6 On-the-Water-Days Prerequisite for ASA 104 | Modern Sailing

6 Ways to Achieve Your 6 On-the-Water-Days Prerequisite for ASA 104

Are you an ASA 103, Basic Coastal Cruising certified sailor looking forward to ASA 104, Bareboat Cruising?

After completing ASA 103, Modern Sailing students are required to complete six on-the-water days as a skipper, co-skipper, or student to prepare for the challenge of ASA 104.
Note: Club Sails and crewing on vessels above your fleet rating do not count towards your 6 on-the-water days for your ASA 104 prerequisite.

Below are six ways to fulfil the prerequisite:

1. Charter as the Skipper on Record

NOTE: 3 of your 6 on-the-water days must be as the skipper on record. A bareboat charter in your name  (including a Midweek Sunset charter) will count as an on-the-water day towards your ASA 104 prerequisite. (Club membership is required to charter.)

Are you chartering for the first time? Here are five articles you may find helpful:

2. Co-Skipper with a Modern Club Member

You can credit up to three on-the-water days towards your ASA 104 prerequisite as a co-skipper with an MSC club member. Please be sure to inform the front desk so we can track it. Learn more about co-skippering here: What Is a "Co-Skipper?" (You must be both fleet rated (Sportboat: 24'-26', Silver: 30'-32', Gold: 33' - 37', Platinum: 38'+, Catamaran: multihull) and site rated (Berkeley or Sausalito) for the boat you are co-skippering).

3. Receive a Private Lesson

When you spend 3 or more hours aboard with one of our instructors, this counts as 1 on-the-water day towards your ASA 104 prerequisite. Considering a Private Lesson? Discover 5 Reasons to Take Private Sailing Lessons on SF Bay.

4. Complete a Sailing Clinic

ASA 103-certified sailors are eligible to join the following clinics, each of which will count as 1 on-the-water day:

5. Race

Your participation in the 4-day Intro to Spinnaker Racing Clinic counts as three on-the-water days. (The previous 2-day Racing Clinic and 2-day Asymmetrical Spinnaker Clinic counted as 2 OTW days each, qualifying at the maximum 3 days in total).

6. Skipper a Privately Owned Boat

Do you own a sailboat, or know someone who does? When you skipper a sail aboard a privately-owned boat, we'll give you credit when you provide us with a detailed Sailing Resume. Please let us know the dates and locations of your skipper days, boat name(s), boat length, and owner's name. If the owner is someone besides yourself, please provide the owner's contact information for verification purposes. We'll give you credit for these on-the-water days when you provide us with an approved detailed Sailing Resume.

Do you have any questions about the ASA 104 prerequisite? Please reach out to our friendly office team by phone at (415) 331-8250 or send us an email. We're happy to help!

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  • Danny Collins

    The office staff was very accommodating in meeting my availability.

  • Lisa Butzer Wilde

    Thumbs up to (Club Skipper) Geoff (Love) and his wife Laura. I went on my first Club Sail on Sunday, January 18, 2026. They were terrific!

  • Ellen Bator

    Informative and professional

  • Emma & George Stubbs, Sausalito

    We just took our ASA 106 at a school in Rhode Island as we prepare for 6 months of cruising in the Caribbean. The class was great, but more than anything it made us really appreciate the quality of teaching and rigor at Modern Sailing. Even though we were the newest to sailing, the group seemed to think that we had the best fundamentals. We felt very well prepared and we see why Modern Sailing has the reputation it does.

  • John Kipping

    The meeting room was quite adequate and the location most convenient, but the course outline and instruction were outstanding. Modern Sailing is fortunate to have such a well organized instructor in Mr. Stan Lander who teaches very well from a rich professional background. Mr. Lander was generous with his time and patiently in helping students who needed more attention or time in understanding various aspects of the curriculum.

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