Tonnage survey. What does it involve?

[Poignard]

There is a definition somewhere, you can probably find it. Some volume is subtracted from the total, engine etc., I forget all the detail.

Hope you enjoy this

Steamship Mutual - Tonnage Measurement of Ships

 

[pandos]

There is a definition somewhere, you can probably find it. Some volume is subtracted from the total, engine etc., I forget all the detail.

See post #7 for how to calculate in accordance with the Irish legislation.

In another thread the OP mused about registering on the Irish register thus the perceived relevance of the Irish legislation.

Undoubtedly the uk has somewhere some thing similar on its statutebook....maybe here

The Merchant Shipping (Tonnage) Regulations 1997

 

[KompetentKrew]

The surveyor came on board when ours was "surveyed" in 2009. He said that he had done similar boats before and the only thing he measured was height in the saloon. I think it was from the lowest point in bilge to deck level and he said that he'd get other measurements from earlier jobs. I suspect he'd measured a 42i before but not a 42DS.

I said that they were a identical and he was really just there to make certain my boat was a 42DS and actually existed. He agreed that this was a reasonable interpretation of his role. An expensive way of getting measurements for a standard production boat.

Very much my experience / understanding from being tonnage surveyed in 2019.

The surveyor thanked me for the drawings of the boat that I had and took one or two measurements with a tape measure in the salon, but they were half-assed and I share your understanding that a major element of the Part 1 survey requirement is fraud deterrence and checking the existence of the boat.

As per @pvb's comment about mortgages, the Part 1 is like the land registry for boats, and the owner of record is unequivocally the owner. Without Part 1 registration you own the boat the way you might own a football or a chest of drawers, dependent on receipts and testimony to prove it.

Is there any benefit to having the part 1 rather than part 3?

You're not allowed to use the SSR is you don't live in the UK for at least 185 days of the year. Part 1 is a necessity for the dedicated yachting vagabond.

I believe the RYA scheme is the cheapest way to get tonnage surveyed.

 

[rogerthebodger]

Hope you enjoy this

Steamship Mutual - Tonnage Measurement of Ships

That document states the tonnage was based on the cargo carrying capacity.

It also says the IMO definition as this exception " all ships except warships, ships of less than 24 metres in length "

So how is the Gross Tonnage of warships, ships of less than 24 metres in length calculated

Clearly a warship does not carry cargo so maybe ships of less than 24 meters in length are also exempt as they don't carry cargo.