For swimming, prioritise safe ladders, anti-slip deck, no entrapment points and adequate water depth. For drive-on PWC docks account for horizontal drive-on/off loads and ensure the restraint system is suitable.
Small modular HDPE systems are most appropriate in protected waters unless specifically engineered otherwise.
What changes for swimming platforms and PWC docks
Both of these classes are defined by people and craft arriving from the water rather than from the shore, often at speed, often with bare skin against the structure. The detailing problem is contact: edges, fasteners, fixings, growth and anything that can trap a hand, a foot or a fin.
Unsupervised use is the other factor. Swimming platforms attract people who did not read the sign, at night, in numbers, and the structure has to fail safely under that reality.
Questions to settle before you specify
- What is the water depth under and around the platform at the lowest level, given people will jump?
- How does a person get back on board, and does that work for someone tired or injured?
- Are there any entrapment points between modules, under the deck, or at the restraint?
- For PWC docks, what craft are being driven on, at what weight, and how often?
- How does marine growth accumulate, and how is it removed without damaging the surface?
What to put in the RFQ
- Edge, corner and fastener detailing specified for skin contact.
- Boarding provision — ladder, step or drive-on surface — nominated as an item.
- Entrapment assessment covering module joints and restraint hardware.
- Surface that stays usable when wet and does not become abrasive with growth.
- Anchoring or restraint designed for the exposure, including seasonal removal if applicable.
Where these go wrong
- Protruding fasteners or sharp module joints where people climb out.
- A platform sited where depth is adequate at high water and dangerous at low water.
- No boarding aid, so people scramble over the edge.
- PWC docks specified for one craft weight and used by heavier machines.
Questions buyers ask
Does a swimming platform need approval?
Structures placed in a waterway generally need permission from whoever controls that waterway and the bed beneath it, and the requirements vary by state and location. Treat it as an approval question from the start rather than assuming a small structure is exempt.
Are drive-on PWC docks hard on the craft?
They are designed to support the hull, but the surface, the approach and the craft weight all matter. Confirm the rated craft weight and the approach conditions the product was designed for.