CHESHUNT WATER ACTIVITIES FIELD GUIDE
Open-water laps at HYMB: a brisk, expert-only plunge into Cheshunt’s lake
Guided open-water swim sessions at Herts Young Mariners Base for experienced swimmers aged 14 and up, offered Wednesday evenings and Saturday mornings — this guide explains what to expect and what to bring.
Open-water laps at HYMB: a brisk, expert-only plunge into Cheshunt’s lake.
At Herts Young Mariners Base in Cheshunt you’ll find a well-maintained lake set up for open-water swimming: a simple, focused environment where experienced swimmers can drop in for a structured swim session, use indoor changing facilities and grab a hot drink afterwards.
Highlights
Outing Highlights
A tidy open-water venue for trained swimmers
HYMB’s lake is maintained for open-water use and is offered as a place to ‘take a dip at your leisure’ — an uncomplicated setting aimed at swimmers who already have open-water experience.
Two weekly windows: early Saturday and Wednesday evening
Sessions run on Wednesday evenings and Saturday mornings, providing a longer evening option midweek and a concentrated morning block at the weekend to suit weekday or weekend routines.
Changing rooms, refreshments and water-safety cover
The site provides indoor changing rooms, toilets, free parking and refreshments such as tea, coffee and hot chocolate, alongside water-safety provisions to support the swim sessions.
What the day feels like
What the session feels like
Expect a straightforward open-water session: arrive, use the indoor changing facilities to kit up, enter the lake for coached or self-directed laps within the available session window, then dry off and warm up with refreshments on site.
Suitability
Who it's for
Who this session suits — and who should look elsewhere.
Practical planner
Details to review before reserving
Bring a towel, a change of clothes, swimming gear and a swim hat.
Facilities include free parking, toilets, indoor changing rooms, water safety provision and refreshments (tea, coffee and hot chocolate).
Review cancellation policies before reserving.
Frequently asked questions
Planning Your Outing
What ages can attend?
Participants must be aged 14 years or older.
Do I need prior open-water experience?
Yes — the sessions are for swimmers who already have open-water swimming experience.
When are the sessions held?
Sessions open Saturday mornings (from 7:30 a.m.) and Wednesday evenings (from 5:00 p.m.).
How long are the sessions?
Saturday morning sessions run up to 2 hours 15 minutes; Wednesday evening sessions run up to 3.5 hours.
What facilities are available on site?
The base provides free parking, toilets, indoor changing rooms, water-safety cover and refreshments such as tea, coffee and hot chocolate.
What should I bring to the session?
Bring your swimming kit, a swim hat, a towel and a change of clothes.