Making Astro-Navigation, Simple!
We specialise in making Astro & Celestial Navigation Simple and Practical.
International Yacht Training
Astro Nav UK Ltd. is an IYT Professional Partner School and is a sister company of CTS & SMS UK Ltd which is an MCA ATP.
About Us
AstroNav UK, (formerly the UK branch of Crew Training Solutions for IYT courses) have over 15 years experience in providing training to the small boat and yachting sectors of the maritime industry.
The IYT Master of Yachts 200gt Unlimited Certificate of Competence is an MCA Approved Course and accepted for progression from MCA STCW Officer of the Watch (OOW) 3000gt (Yachts) to MCA Chief Mate 3000gt (Yachts). The 5-6 day course includes the exam, passage plan and practical sights.
AstroNav UK utilises modern & current nautical publications found on the bridge of modern yachts to deliver engaging and relatable training.
AstroNav UK are the only provider of the IYT Master of Yachts Unlimited course, exam and CoC in the UK (an arguably better alternative to the RYA Yachtmaster Ocean). The IYT/MCA Master of Yachts Unlimited CoC is accepted by the MCA for progression from OOW 300gt to Chief Mate 3000gt (Yachts).
Whilst we specialise in delivery of AstroNav / Celestial Navigation, we share premises with our sister company CTS & SMS UK Ltd., an MCA Approved Training Provider for various courses including MCA STCW Proficiency in Medical First Aid.
Other courses available include: VHF Radio SRC, IYT/MCA Small Powerboat & RIB Master, STCW MCA Elementary First Aid
MCA STCW MFA
A 4 day MCA approved course required for higher level CoC’s such as Master 500gt, MCA Chief Mate and more.
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IYT Master of Yachts Unlimited
Accepted by the MCA for Chief Mate 3000GT. Exam included.
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MCA / IYT Small Powerboat & RIB Master
An MCA approved 2.5 day course for recreational and commercial use on vessels upto 15m in length and 20nm from a safe haven
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Upcoming Courses
Why choose AstroNav UK!
With over 15 years experience in delivering maritime training and sister company to CTS & SMS UK Ltd. (an MCA Approved Training Provider), AstroNav provide high quality, dynamic and engaging training with a modern approach delivered by a younger generation of seafarers and instructors. Our team is lead by Jon Geddes MNI, Chief Examiner for IYT Worldwide, a qualified MCA STCW Master / OOW and author to various training courses including an MCA approved IMO 6.09 Training Course for Instructors and the latest 2025 IYT Master of Yachts Unlimited (MCA Approved) course.
AstroNav UK are the only provider of the IYT Master of Yachts Unlimited course, exam and CoC in the UK (an arguably better alternative to the RYA Yachtmaster Ocean). The IYT/MCA Master of Yachts Unlimited CoC is accepted by the MCA for progression from OOW 300gt to Chief Mate 3000gt (Yachts).
Whilst we specialise in delivery of AstroNav / Celestial Navigation, we share premises with our sister company CTS & SMS UK Ltd., an MCA Approved Training Provider for various courses including MCA STCW Proficiency in Medical First Aid.
Other courses available include: VHF Radio SRC, IYT/MCA Small Powerboat & RIB Master, STCW MCA Elementary First Aid
Here’s what previous customers have to say:
”Kyle Eddy – 5 Stars:
I recently completed my IYT Unlimited course with ASTRONAV UK, and I can’t recommend them highly enough. What really stood out to me was how my instructor managed to take the complex and often daunting subject of celestial navigation and make it genuinely fun and engaging.
The teaching style was clear, patient, and incredibly knowledgeable, with just the right balance of theory and practical examples. I came into the course expecting a challenge, and while it certainly was, I found myself looking forward to each session. The passion and enthusiasm for the subject were infectious, and that made all the difference.
If you’re considering advanced maritime training, ASTRONAV UK is the place to go. I left feeling confident, inspired, and well-prepared for what’s ahead.”
”Harry Blazeby – 5 Stars
I recently completed the IYT Master Unlimited at the CTS school on the Wirral.
Jon is a passionate and extremely knowledgeable instructor and adds practical and relevant methods into this very traditional course.
He also has in depth MCA knowledge so I would recommend this course for candidates going down the MCA OOW/Chief Mate route as it helps focus on the MCA way of examining vs RYA.”