30-second answer
Choose the smallest tender that carries the normal load and can always be recovered and secured.
Best forCruising sailors balancing payload, storage and davit limits
Watch outDo not choose from parent-yacht length alone
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Dinghy Storage and Davit Size Constraints
Almost every tender purchase goes wrong the same way: the buyer starts from what they want the tender to do, then discovers at the end that it does not fit the davits, the foredeck or the locker. Start from the constraint and work backwards.
Measure three things before you shop: the davit span and rating, the clear foredeck space with the anchor gear in place, and the largest locker opening the packed boat must pass through.
Tender Size by Parent Yacht Length
| Parent vessel | Typical tender | Usual constraint |
|---|---|---|
| Under 30 ft monohull | 1.9–2.4 m packable | Locker and foredeck space |
| 30–38 ft monohull | 2.3–2.9 m packable or light RIB | Foredeck stowage, single-handed launching |
| 38–45 ft monohull | 2.6–3.1 m RIB or inflatable cat | Davit rating and ready-to-use weight |
| 45 ft+ monohull | 3.0–3.4 m RIB | Davit span, boarding height |
| Cruising catamaran 38–45 ft | 3.0–3.6 m RIB or cat | Davit span rather than weight |
| Motor yacht with garage | 3.0–5.0 m RIB or jet tender | Garage dimensions |
Why 2.9 Metres Suits Many Cruising Tenders
For cruising couples, roughly 2.9 m is where a tender becomes genuinely useful: it will plane with two adults and shopping, it tows straight and it is still liftable. Below about 2.6 m the boat starts refusing to plane with two people; above about 3.2 m the weight and stowage problems escalate faster than the usefulness does.
That is why the Highfield UL290 is the single most cross-shopped cruising tender in Australia. It sits exactly on that line.
Worked Tender Sizing Examples
| Cruising setup | Useful starting point | What decides the final size |
|---|---|---|
| Solo sailor, 34 ft monohull | 2.3–2.6 m packable inflatable | One-person launch, packed dimensions and whether the outboard can be lifted separately |
| Cruising couple, 40 ft monohull with davits | 2.7–3.0 m light RIB | Complete hanging weight, davit span and boarding height |
| Family of four, 42 ft catamaran | 3.1–3.4 m RIB or inflatable catamaran | Loaded planing performance, davit beam and payload after fuel and beach gear |
| Liveaboard in tropical Queensland | 2.9–3.3 m alloy RIB with CSM tubes | UV exposure, cover discipline, repair support and full-time outdoor storage |
| Coastal cruiser without davits | 2.4–2.8 m packable tender | Foredeck footprint, locker opening and time required to inflate and stow |
Measure the Complete Tender System
- Measure davit span, lifting-point spacing and clear width between the yacht's stern quarters.
- Calculate ready-to-use weight with the exact outboard, full fuel, anchor, safety equipment, wheels, cover and lifting bridle.
- Measure the tender at its widest fittings, not only the published beam, and allow room for tubes to expand in heat.
- Test boarding from the yacht, the water and a beach with the least mobile regular crew member.
- Confirm that the crew can recover and secure the boat before conditions deteriorate; a larger tender is not safer if it is left towing.
Common Dinghy Sizing Mistakes
The most common mistake is treating parent-yacht length as a specification. It is only a starting clue. Two 40-foot yachts can have completely different davit ratings, stern geometry and storage options.
The second mistake is testing an empty tender. Four people, fuel, provisions, a wet dog and beach equipment can transform freeboard, acceleration and steering. Trial the normal load, then repeat the recovery sequence while everyone is tired and the boat is wet.
- Buying the largest tender that physically fits rather than the smallest one that reliably does the job.
- Comparing hull weights while ignoring engines, fuel and permanently carried equipment.
- Assuming maximum-person capacity describes comfortable cruising capacity.
- Planning to tow because the selected boat is too difficult to recover promptly.
Frequently asked questions
Is a 2.9 metre tender large enough for four people?
It can be for short, sheltered transfers, but comfort and performance depend on the published payload, tube diameter, floor area, engine and the weight of fuel and gear. Test the exact normal load rather than relying only on the person-capacity plate.
Should I choose a tender from the length of my yacht?
Use yacht length only as an initial range. Davit rating and span, foredeck or locker dimensions, crew strength, normal payload and water conditions determine the final answer.
How much clearance should I allow around a tender on davits?
There is no universal allowance because yacht geometry and lifting systems differ. Measure the widest fittings, tube expansion, engine position and movement under way, then confirm the installation with the relevant manufacturers or a qualified marine professional.
Is it safer to buy a bigger tender?
Not automatically. Extra length can improve payload and ride, but it also adds weight and recovery difficulty. The safer system is one the crew can operate, recover and secure reliably in the conditions they actually encounter.
How this guide was made
Written and reviewed by Gabriel Machuret. BuyDinghy compares published manufacturer and Australian distributor material, labels missing specifications instead of estimating them, and separates editorial judgement from verified facts. Read the methodology or report a correction.