Buying a used boat privately in Australia: the complete checklist

Buying a used boat privately is where the value is, and where the risk is. In a private sale there is no dealer warranty, no statutory cooling-off period, and no one obliged to tell you what is wrong with the boat. What you get instead is a lower price and the ability to talk directly to the person who has owned and used the thing.

That trade is usually worth taking. Buying a boat through a private sale routinely costs 15–25% less than the same hull on a dealer's floor, and the seller can answer questions no dealer can — where it has been, what has broken, why they are selling.

This checklist runs in the order that actually protects you: the cheap checks that can rule a boat out come before the ones that cost you a Saturday.

Before you drive anywhere

Ask for the HIN. The Hull Identification Number is usually 12–14 alphanumeric characters, typically on the transom's starboard side. A seller who cannot or will not provide it is a seller to walk away from. You need it for the next step.

Run a PPSR check. About $10, done online, takes minutes. It tells you whether there is finance owing on the used boat, whether it has been written off, and whether it is recorded as stolen. If money is owing and you buy it anyway, the financier can repossess the boat from you — you become the one out of pocket, not the seller. See what a PPSR check does and doesn't tell you.

Ask for photos of the compliance plate and the trailer plate. These give you the ATM and ball weight, so you can confirm you can tow it before spending a day driving. Trailer weights explained.

Ask why they're selling. Not because the answer is verifiable, but because the ones who hesitate are worth noting.

At the inspection

Go in daylight. Go with someone else if you can. Take your time — a seller who rushes you is telling you something.

The hull - Look along the hull from bow to stern at eye level. Ripples, flat spots or a wavy line suggest impact damage or a hard life. - On aluminium: check for cracked or weeping welds, especially around the transom and any strakes. Look for corrosion where dissimilar metals meet. - On fibreglass: tap along the hull. A sharp sound is solid, a dull thud can mean delamination. Check the transom for softness — a soft transom is a serious repair. - Look at the keel and strakes for grounding damage.

Not sure which material suits you? Aluminium vs fibreglass.

The transom and engine mount This is the single most expensive thing to get wrong on a second hand trailer boat. Push down firmly on the outboard's lower unit and watch the transom. Any flex, movement or creaking is a problem. Water-damaged transom cores are common and expensive.

The engine - Ask for service records. Their absence is not automatically disqualifying on an older boat, but their presence is a strong positive signal. - Check the hour meter. What counts as high engine hours depends more on how they were accumulated than the number itself. - Look for salt crust, corrosion around the powerhead, and oil residue. - Insist on seeing it run. Ideally in the water. At minimum on muffs in the driveway — but an engine that runs fine on muffs can still fail under load, so on-water is much better. - Watch the telltale (the water stream). A weak or absent stream means an impeller or cooling problem.

Electrics and everything else - Test every switch: nav lights, bilge pump, live well, sounder, radio. - Check the battery terminals for corrosion and the wiring for amateur repairs. Chocolate-block connectors and electrical tape in a marine environment are a warning about how the rest was maintained. - Check the bilge for standing water and note whether it smells of fuel.

The trailer Trailers are quietly one of the most neglected parts of buying a boat. - Check for rust at the welds and inside the box sections. - Check bearings — spin each wheel and listen for roughness. - Check the coupling, safety chains and brake function. - Confirm the registration is current and matches the state it is being sold in.

Get a marine survey

For anything over roughly $20,000, or any used boat where the answers above left you unsure, book an independent marine surveyor. In Australia they typically charge around $20–40 per foot depending on the boat's size, age and complexity. Look for accreditation with a body such as the Australasian Institute of Marine Surveyors.

A survey costs a fraction of a transom rebuild, and a seller who objects to one has told you what you needed to know.

What a fair price looks like

Two things make pricing a second hand boat harder than pricing a car: there is no Redbook equivalent for boats in Australia, and the same hull with a different motor can differ by twenty thousand dollars.

Practical approach: - Search the same make, model and year across several sites and note the *range*, not a single figure. - Weight the motor heavily. A recent four-stroke on an older hull is worth far more than an old two-stroke on a newer one. - Treat an asking price well below the range as a warning, not a bargain. It is the most common structure of a scam. - Remember asking prices are not sale prices. Where sold-price data exists, it is worth more than a hundred listings.

Paying and paperwork in a private sale

• Never pay a deposit before you have seen the boat in person.
• Be immediately suspicious of any seller who wants payment via gift cards, cryptocurrency, wire transfer, or through a "shipping agent". These are not unusual payment preferences — they are the standard structure of a scam.
• Get a written receipt with both parties' names and addresses, the date, the price, and the HIN and trailer registration number.
• Confirm the trailer registration transfer requirements for your state — they differ, and the obligations sit with both parties.

What this platform does and does not do

Every listing here is read by a person before a buyer sees it, and we reject listings with implausible pricing, missing or nonsense HINs, or the off-platform payment patterns described above.

That is not verification. We do not inspect boats, confirm ownership, verify engine hours, or check whether finance is owing. The PPSR search and the marine survey are yours to run, and they are the two steps that actually protect your money.

Once you know what you're looking for

Narrow by the kind of boat before you start inspecting, so you're comparing like with like: tinnies and dinghies, runabouts and bowriders, centre consoles, cuddy and half cabins, or by what you'll use it for — fishing, family and leisure, skiing and wakeboarding.