# Outfitting Weight of Passenger Ship

Discussion in 'Boat Design' started by Rounak Saha Niloy, Sep 11, 2022.

Tags:
1. Joined: Mar 2022
Posts: 16
Likes: 0, Points: 1
Location: Sydney, NSW

### Rounak Saha NiloyJunior Member

I have to estimate the Outfitting Weight of some passenger ships (L = 45-55 m).
This is the formula of estimation that I have got-

What is the measure of gross registered volume here? Does it mean the volume of the hull up to deck + volume of superstructures? or only the volume of superstructures?

2. Joined: Apr 2015
Posts: 525
Likes: 135, Points: 43, Legacy Rep: 37
Location: Berlin, Germany

### HeimfriedSenior Member

The multiplication of a coefficient given in ton/m² with a sum of volumes given in m³ will not generate a weight (nor a mass) but a number relating to a unit "ton meter". To me the formula is wrong.
May be the unit of the coefficient should have been ton/m³.

3. Joined: Mar 2022
Posts: 16
Likes: 0, Points: 1
Location: Sydney, NSW

### Rounak Saha NiloyJunior Member

I understand. It should be ton/m^3,

4. Joined: Oct 2007
Posts: 3,456
Likes: 1,420, Points: 113, Legacy Rep: 37

### bajansailorMarine Surveyor

5. Joined: Aug 2002
Posts: 16,645
Likes: 1,609, Points: 123, Legacy Rep: 2031
Location: Milwaukee, WI

### gonzoSenior Member

Registered tonnage is a function of local laws. It has no relation to any actual weights. Is the formula what Australia requires?

6. Joined: Sep 2007
Posts: 1,948
Likes: 168, Points: 63, Legacy Rep: 304
Location: SF bay

### Squidly-DiddlySenior Member

what is definition of "Outfitting Weight" in this context? Is it various "hotel" type furnishings not part of the ship? Example all the stuff not yet installed in the 80-90% finished Global Dream II?

7. Joined: Oct 2007
Posts: 3,456
Likes: 1,420, Points: 113, Legacy Rep: 37

### bajansailorMarine Surveyor

I think that a passenger ship can be roughly broken down as :
1) Steel weight - all of the steel work (and aluminium probably in the superstructure) in the hull and decks, including all the framing, bulkheads, mooring bollards, railings etc
2) Machinery weight - propulsion engines and generators
3) Outfit weight
4) Deadweight - this would include all of the crew and passengers and their baggage, and all of the fuel, oil, water (including in the pool(s)) and the stores (food, drink etc)

So the outfit would be all the hotel furnishings and fixtures, including galleys and bathrooms and such, but also the ship items like the anchor / rope windlasses and cables, anchors and chains, lifeboats and tenders, liferafts, electrical equipment on the bridge perhaps (or maybe this would come under machinery).

But in a shipyard when they are doing their estimating of weights they will have many more sub-categories, and it will be very detailed.

8. Joined: Sep 2007
Posts: 1,948
Likes: 168, Points: 63, Legacy Rep: 304
Location: SF bay

### Squidly-DiddlySenior Member

sounds like Outfitting Weight could vary by at least 3x depending on how pimped out it was hotel wise with also "money buys weight" VS lower cost but heavier items. I'm wanting to convert a standard full size van to RV, but I'm going minimalist fly-weight, removable, fold up and out of way VS traditional built in heavy particle board.

Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.