HYMB - Herts Young Mariners Base

HYMB - Herts Young Mariners Base HYMB has been offering outdoor educational opportunities to both adults and young people from Hertfordshire and surrounding areas for over 50 years.

HYMB has been offering outdoor educational opportunities to both adults and young people from Hertfordshire and surrounding areas for over 60 years. From initially offering mainly watersports, over the past decade we have expanded in to other areas, for example caving, climbing and problem solving/team building activities. HYMB is in partnership with Youth Connexions Hertfordshire. HYMB can now ac

commodate up to 180 participants at any one time, whether school students, youth groups and clubs, HYMB members activities or corporate days for business’s. We offer a wide range of activities to both groups and individuals.

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Don't forget our Holiday Camps are run right through to the end of Summer!8.30am-3.15pmHerts Young Mariners BaseAges 8–1...
21/08/2026

Don't forget our Holiday Camps are run right through to the end of Summer!

8.30am-3.15pm

Herts Young Mariners Base
Ages 8–16 years

Give your child an unforgettable summer of outdoor adventure. Every day is packed with exciting, instructor-led activities designed to build confidence, develop new skills, and create lasting memories.

Activities include:

🧗 Rock Climbing
🛶 Kayaking
🏄 Paddleboarding
🚣 Open Canoeing & Bellboating
🏹 Archery
🧭 Orienteering
⛵ Raft Building
🕳️ Caving

Fresh air, new friends, exciting adventures, and plenty of fun await.

Spaces are limited and expected to fill quickly. Book today and secure your child's place for an action-packed summer.

Visit 👉 https://brnw.ch/21x567v

Extended opening hours – For the next 6 weeks! Make the most of summer with extended opening hours at Herts Young Marine...
28/07/2026

Extended opening hours – For the next 6 weeks!

Make the most of summer with extended opening hours at Herts Young Mariners Base.

Whether you're enjoying an open water swim, heading out on a paddleboard, or relaxing by our beautiful spring-fed lake, we've got more time for you to enjoy it all.

Tuesday - Friday: 12:00pm - 8:00pm

Saturday and Sunday: 7:30am - 5:00pm

Don't forget to stop by the HYMB Kiosk for a cold drink or ice cream after your session! 🍦🥤

Book now via the Better UK app or our website: https://brnw.ch/21x4ufy

We can't wait to welcome you to the lake this summer!

☀️ Summer Holiday Club - more spaces available! Due to popular demand, we've opened additional spaces for our Summer Hol...
24/07/2026

☀️ Summer Holiday Club - more spaces available!

Due to popular demand, we've opened additional spaces for our Summer Holiday Club, with availability starting next week.

Weekly bookings available throughout the summer holidays:

- 8:30am - 3:15pm
- Herts Young Mariners Base
- Ages 8–16 years

Give your child an unforgettable summer of outdoor adventure. Every day is packed with exciting, instructor-led activities designed to build confidence, develop new skills, and create lasting memories.

Activities include:
🧗 Rock Climbing
🛶 Kayaking
🏄 Paddleboarding
🚣 Open Canoeing & Bellboating
🏹 Archery
🧭 Orienteering
⛵ Raft Building
🕳️ Caving

Fresh air, new friends, exciting adventures, and plenty of fun await.

Spaces are limited and expected to fill quickly. Book today and secure your child's place for an action-packed summer.

Visit: https://brnw.ch/21x4pgh

Seasonal opening times are here – with extended weekend hours! ☀️We're excited to announce our Seasonal Opening Times at...
15/07/2026

Seasonal opening times are here – with extended weekend hours! ☀️

We're excited to announce our Seasonal Opening Times at Herts Young Mariners Base, giving you even more opportunities to enjoy our beautiful natural spring-fed lake throughout the week and now with extended weekend opening until 5pm.

Whether you're training for an event, enjoying a leisurely open water swim, or heading out on a paddleboard with friends and family, there's never been a better time to visit.

After your session, stop by the HYMB Kiosk for a refreshing cold drink or an ice cream, then relax and soak up the lakeside atmosphere.

Seasonal opening times:

Tuesday | 4pm–8pm
Wednesday | 4pm–8pm
Thursday | 4pm–8pm
Friday | 4pm–8pm

🌅 Extended Weekend Opening
Saturday | 7.30am–5pm
Sunday | 7.30am–5pm

Whether you're an experienced open water swimmer, trying paddleboarding for the first time, or simply looking for a unique way to spend your weekend outdoors, HYMB has something for everyone.

Come and discover one of Hertfordshire's hidden gems and enjoy the great outdoors.

Book your session today via the Better UK app or through our website 👉 https://brnw.ch/21x49zs

We look forward to welcoming you to the lake! 👋

Summer is in full swing, and we're excited to announce our extended seasonal opening times for Open Water Swimming & Pad...
07/07/2026

Summer is in full swing, and we're excited to announce our extended seasonal opening times for Open Water Swimming & Paddleboarding at Herts Young Mariners Base.

Whether you're looking to train, unwind after work, or simply enjoy time on the water, our beautiful spring-fed lake is open more often than ever, giving you even more opportunities to get outdoors this summer.

After your session, why not grab an ice cream or a refreshing cold drink from the HYMB Kiosk, relax by the lakeside, and make the most of the longer summer days.

Seasonal Opening Times

Tuesday: 4pm-8pm
Wednesday: 4pm-8pm
Thursday: 4pm-8pm
Friday: 4pm-8pm
Saturday: 7.30am-2pm
Sunday: 7.30am-2pm

Whether you're a regular swimmer, new to open water, or fancy a paddleboard session with family or friends, we'd love to welcome you this season.

Book now via the Better UK app or website 👉 https://brnw.ch/21x3WzG

☀️ Heatwave Special! – Extra open water swimming and paddle sessions have been added!With temperatures set to soar this ...
22/06/2026

☀️ Heatwave Special! – Extra open water swimming and paddle sessions have been added!

With temperatures set to soar this week, we're delighted to announce the addition of Tuesday and Friday sessions to our Open Water Swimming & Paddle programme.

There's no better way to cool off, stay active, and enjoy the sunshine than with a refreshing dip in our beautiful spring-fed lake. Whether you're training for an event, looking for a relaxing swim, or trying open water swimming for the first time, everyone is welcome.

You can now grab an ice cream or a refreshing cold drink from the HYMB Kiosk, relax, unwind, and soak up the summer atmosphere

📅 Session Times

✅ Tuesday | 4pm – 8pm
✅ Wednesday | 4pm – 8pm
✅ Thursday | 4pm – 8pm
✅ Friday | 4pm – 8pm
✅ Saturday | 7:30am – 2pm
✅ Sunday | 7:30am – 2pm

Join the growing open water community, cool down in the lake, and make the most of the sunshine while it lasts! 🌞

To book your session, please use the Better UK app or visit our website: https://brnw.ch/21x3xwP

We are currently recruiting Lifeguards and Paddle Instructors for the season.Herts Young Mariners Base is seeking motiva...
15/06/2026

We are currently recruiting Lifeguards and Paddle Instructors for the season.

Herts Young Mariners Base is seeking motivated and enthusiastic individuals who are eager to build on their existing skills or develop new ones, joining a dynamic and supportive outdoor adventure team.

Successful candidates will receive fully funded training, including the Ready to Ride Award, PSRC, PSI and Swim Safety Rescue qualifications, providing an excellent opportunity for professional development within a unique and rewarding environment.

For more information about the role and to apply, please visit our website https://brnw.ch/21x3mhv

The weather is warming up and so is our Open Water Swimming! 🌞With warm weather forecasted over the next week, there’s n...
15/06/2026

The weather is warming up and so is our Open Water Swimming! 🌞

With warm weather forecasted over the next week, there’s no better time to get back into the water and join us for an unforgettable swim experience.

We’re also excited to announce that our course has now moved to Western Lagoon – giving swimmers an even more natural open water feel and a fantastic new setting to enjoy.

Whether you’re training, relaxing, or trying open water swimming for the first time, come and enjoy our beautiful spring-fed water and friendly atmosphere.

📅 Session times:

Wednesday: 4pm-8pm
Thursday: 4pm-8pm
Saturday: 7.30am-2pm
Sunday: 7.30am-2pm

Book your session here 👉 https://brnw.ch/21x3lWI

Outdoor Yoga Day Retreats at the Herts Young Mariners Base are back on!📅 Sunday 28th of JuneThere’s no better way to res...
05/06/2026

Outdoor Yoga Day Retreats at the Herts Young Mariners Base are back on!

📅 Sunday 28th of June

There’s no better way to reset your mind and body than surrounded by fresh air and nature

🕛 11am–4pm
🧘 Flow Yoga
🌿 Yin Yoga
🍴 Lunch Provided
🔥 Fire Pit Meditation
🎁 Yoga Gift Bag

Book now at £60 per person, secure your place by emailing us at [email protected].

Timetable Alert!We’ve added extra Open Water Swimming and Paddle Sessions!Make the most of the hot weather with swimming...
26/05/2026

Timetable Alert!

We’ve added extra Open Water Swimming and Paddle Sessions!

Make the most of the hot weather with swimming sessions bookable from 12pm–8pm this Wednesday only.

📅 Open Water Swimming - Time Table

Wednesday: 4pm–8pm
Thursday: 4pm-8pm
Saturday: 7.30am–2pm
Sunday: 7.30am–2pm

📅 Paddle - Time Table

Wednesday: 4pm–8pm
Thursday: 4pm-8pm
Saturday: 10am–3pm
Sunday: 10am–3pm

To book your session, please use the Better UK app or visit our website: https://brnw.ch/21x2PSO

Address

231 Windmill Lane
Cheshunt
EN89AJ

Opening Hours

Monday 9am - 9pm
Tuesday 9am - 5pm
Wednesday 9am - 7pm
Thursday 9am - 9pm
Friday 9am - 5pm
Saturday 9am - 2pm
Sunday 9am - 12pm

Telephone

+441992628403

Website

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