Worldyards Segment Definitions

for Commercial Vessels

18 June 2012

Worldyards' Segment Definitions

for Commercial Vessels
1. Bulkers
Capacity
Sub-segment Definition
Measure

Very Large Ore Carriers are purpose-designed and built for

carriage of iron ore. They are typically larger than 210,000 dwt,
and have much smaller cargo cubic capacity and smaller hatches
than conventional bulk carriers. If viewed from mid-ship, ore
carriers have box-shape holds inside of two centerline bulkheads
1(1) VLOC for cargo, while the side holds are empty. (This arrangement dwt
contrasts with the cargo holds of bulk carriers which have no
centerline bulkheads, but do have upper/lower wing tanks). As a
result, VLOCs are not considered bulk carriers by classes/builders
and therefore they do not need to comply with CSR rules,
but many in the industry equate VLOCs to large capesizes.

1(2) Capesize Bulkers between 120,000 – 209,999 dwt dwt

Bulkers with dwt <= 119,999 and breadth > 39.5m. They are
1(3) Handy-cape dwt
alternatively known as “mini-cape”.
Post Panamax Bulkers between 50,000 to 110,500 dwt, and breadth >32.31m and
1(4) dwt
bulkers <= 39.1m.
Bulkers between 55,000 and 84,999 dwt, and breadth <= 32.31m
and loa >= 200m. The ships with loa 229m are given a name by
Tsuneishi shipbuilding as "Kamsarmax" however this term is now
being loosely used in the industry as a capacity concept - it refers
to big panamaxes between 78,000 to 82,000 dwt. It is worthwhile
1(5) Panamax bulkers noting that other yards do not adopt this name even if they have dwt
designs falling into this range. Oshima shipyard called their 82,000
dwt design "Japan-max" (loa 225m), whilst Universal shipyard
does not have a house-name for their 81,000 dwt design (loa
225m), which they simply refer to as "panamax".

Baby-Panamax Bulkers between 50,000 – 54,999 dwt and breadth <= 32.31m and
1(6) dwt
bulkers loa >= 200 m
Bulkers between 50,000 – 64,999 dwt, and breadth <= 32.31m and
1(7) Supramax dwt
loa < 200m
1(8) Handymax Bulkers with dwt 40,000 - 49,999 dwt
1(9) Handysize Bulkers with dwt 25,000 - 39,999 dwt
1(10) Small Handy Bulkers with dwt 10,000 – 24,999 dwt
1(11) Bulker < 10000 dwt Bulker with dwt < 10,000 dwt

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 Worldyards Segment Definitions
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Open-hatch bulk carriers are distinct from the rest of the bulker
feature due to their configuration of double hulls with box-shape
cargo holds. (This is in contrast to conventional bulk carriers,
which are fitted with hopper tanks. Open-hatch bulk carriers are
also distinct from the Conbulker subsegment because open hatch
ships lack cellguides in the cargo hold of open-hatch bulk
Open Hatch Bulk carriers.) The traditional open-hatch bulk carriers have travelling
1(12) dwt
Carriers, OHBC gantry cranes but are increasingly equipped with pedestal deck
cranes. Open-hatch bulk carriers are designed for forest product
(paper/pulp), but can also carry normal general cargo and steel
products. The OHBC offers direct access to the hold through
hatches which extend the full width of the vessel, allowing large
cargo units to be lowered into place.

Ships that are able to discharge their cargo independently of shore

Self-discharging side equipment by way of a gravity or top discharge system
1(13) dwt
bulkers permanently installed in the holds, containing various types of
loose dry cargo of a homogeneous nature.

Woodchips carriers generally have six holds to carry woodchips in

bulk. These bulk carriers are box-hold square bottom vessels with
wide hatches. Vessel sizes are typically 40,000 dwt to 50,000 dwt,
while capacity is measured in million cubic feet. A standard size is
1(14) Woodchip carriers cbft
usually 3.6m cbm equating to 47,000 dwt. Because of their low
specific gravity, woodchips require a relatively large hold
capacity. Cargo handling equipment includes an unloading system
measured in tonnes per hour.

2. Containers
Capacity
Sub-segment Definition
Measure
Containerships >10,000
2(1) Pure (fully cellular) containerships >= 10,000 teu teu
teu
Containerships 7,000 –
2(2) Pure (fully cellular) containerships between 7,000 - 9,999 teu teu
9,999 teu
Post-panamax
Pure (fully cellular) containerships with breadth > 32.31m and <
2(3) Containerships < 7,000 teu
7,000 teu
teu
Panamax
Pure (fully cellular) containerships with breadth < = 32.31m,
2(4) Containerships > 4,000 teu
and > 4,000 teu and < = 6,999 teu
teu
Containerships 3,000 –
2(5) Pure (fully cellular) containerships between 3,000 – 4,000 teu teu
4,000 teu
Containerships 2,000 –
2(6) Pure (fully cellular) containerships between 2,000 – 2,999 teu teu
2,999 teu
Containerships teu Pure (fully cellular) containerships with breadth < = 32.31m,
2(7) teu
1,500 - 1,999 teu and between 1,500 - 1,999 teu
Containerships teu Pure (fully cellular) containerships with breadth < = 32.31m,
2(8) teu
1,000 - 1,499 teu and between 1,000 - 1,499 teu

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 Worldyards Segment Definitions
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18 June 2012
Containerships teu 500
2(9) Pure (fully cellular) containerships between 500 – 999 teu teu
- 999 teu
Containerships < 500
2(10) Pure (fully cellular) containerships with teu < 500 teu teu
teu

3. Semi-liner tonnage
Capacity
Sub-segment Definition
Measure
General cargo ships that carry a wide variety of cargoes, including
industrial items, bagged cargoes, project cargoes, steel products,
forest products, palletized cargoes, various break-bulk cargoes and
containers. They are un-cellular and have holds with hoistable
tween decks. Some have refrigerated cargo spaces for the carriage
3(1) MPP of perishable cargoes. They have additional cargo handling to and dwt
from the cargo spaces by way of a side loading / unloading system
(for the carriage of cargo in pallet form and other unitized cargo).
What distinguishes small MPP from bulk carriers < 10,000 dwt is
that the latter includes hopper tanks bottom and at times topside
tanks.
MPP vessels with cargo cranes capable of lifting 100mt and above
3(2) MPP Heavy lift singly. They are unicellular and typically with more than one dwt
deck.
Vessel designed to carry bulk cargoes, minor bulk cargoes (forest
products, aluminium etc.) and containers. They typically have
container holds and bulk holds. Container holds are fitted with
cellguides whilst bulkholds are fitted either with container sockets
3(3) Conbulkers dwt
or equipped with fittings (twistlocks and lashing rod) to secure
containers in block stowage. Container holds typically have lift
on/lift off pontoon hatch covers whilst block holds have hydraulic
hinged covers. Reefer sockets are also provided for containers
The Roro Containerships (or ConRo vessels) are a hybrid between
a RoRo and a container ship. This type of a vessel has a below-
3(4) RoRo containers dwt
deck area used for vehicle storage while stacking containers on the
weather deck.

4. LNG (Gas I)
Capacity
Sub-segment Definition
Measure

Liquified Natural Gas carriers. Vessels equipped with insulated

cargo tanks to carry natural gas in its liquid state at a temperature
of -162 degrees Celsius. There are currently two main types of
4(1) Conventional cbm
containment systems: Moss and Membrane.(Other types of
containment systems existing are SPB, pressurized and cylindrical.
However, these systems are not currently being built).

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 Worldyards Segment Definitions
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LNG Vessel Re-gasification Unit - A LNG ship with an onboard

Re-gasification plant allowing it to discharge cargo directly into a
4(2) LNGRV gas pipeline system. This type of vessel can also be used as a cbm
conventional LNG ship. Regasification systems can also be
retrofitted to existing ships.

Re-liquefaction LNG vessel - A LNG ship that is installed with a

re-liquefaction plant allowing it to re-liquefy boil-off gas and re-
4 (3) LNGRL cbm
inject into the cargo tanks. Liquefaction systems can either be
retrofitted to existing ships or installed on new buildings.

5. CNG (Gas II)

Capacity
Sub-segment Definition
Measure
Compressed Natural Gas (CNG) Carrier - An alternative gas
transportation method that fits between pipelines and LNG. As the
name suggests, natural gas is kept in a gaseous state during the
5(1) CNG transportation process. Rather than liquefaction of gas into LNG, cbm
the CNG system uses high pressure in a standard steel
containment structure. The containment system is especially suited
to short distance routes.

6. LPG (Gas III)

Capacity
Sub-segment Definition
Measure
Very Large Gas Carriers are LPG tankers with a carrying capacity
of 60,000 cbm or more. LPG tankers designed to carry propane,
6(1) VLGC butane or a mixture of the two, ammonia as well as other clean cbm
petroleum products (naphtha and jet fuel). These vessels are fully
refrigerated.
Large Gas Carriers - LPG Tankers between 45,000 - 59,999 cbm
6(2) LGC (typically 50,000 – 59,999 cbm). These vessels are fully cbm
refrigerated.
Medium Gas Carriers - LPG Tankers between 30,000 – 44,999
6(3) MGC cbm (typically 30,000 – 40,000 cbm). These vessels are fully cbm
refrigerated.

LPG 20,000 – LPG Tankers between 20,000 - 29,999 cbm. They can be either
6(4) cbm
29,999 cbm semi-refrigerated, or ethylene carriers, or fully refrigerated

LPG 10,000 – LPG Tankers between 10,000 - 19,999 cbm. They can be either
6(5) cbm
19,999 cbm semi-refrigerated, or ethylene carriers, or pressurized.
LPG Tankers between < 9,999 cbm. They can be either semi-
6(6) LPG < 9,999 cbm cbm
refrigerated, or ethylene carriers, or pressurized.
6(7) Ammonia Carriers Gas tankers specially designed for carrying NH3 (Ammonia) cbm

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 Worldyards Segment Definitions
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7. Combination Carriers
Capacity
Sub-segment Definition
Measure
Ore Bulk Oilers are combination carriers designed to carry oil on
7(1) OBO one voyage leg and, then alternate to ore on the other leg. Fitted dwt
with large holds and gas and oil-tight hatch covers.

PROBO (product/ore/bulk/oil) is a kind of combination carrier

7(2) PROBO that can carry crude oil and petroleum products as well as bulk and dwt
ore cargoes.
Very Large Ore Oilers are combination carriers with a
7(3) VLOO dwt
deadweight > 200,000 dwt

8. Crude Tankers
Capacity
Sub-segment Definition
Measure
8(1) ULCC Ultra Large Crude Carriers, or tankers with dwt => 325,001. dwt

Very Large Crude Carriers, or tankers with dwt between 200,000

8(2) VLCC dwt
– 325,000.
8(3) Suezmax Tankers with dwt between 120,000 - 199,999. dwt
Aframax tankers Tankers with breadth >32.31m and with dwt between 85,000 –
8(4) dwt
uncoated 119,999 and not coated.
Post panamax Tankers with dwt 64,999 – 84,999 dwt and Breadth > 32.31m and
8(5) dwt
tankers uncoated not coated.
Panamax tankers Tankers with dwt 60,000 – 84,999 dwt (typically less than 79,999)
8(6) dwt
uncoated and Breadth <= 32.31m and not coated.

8(7) Other crude tankers Tankers without imo class and with dwt < 59,999 and not coated. dwt

9. Product Tankers
Capacity
Sub-segment Definition
Measure
“Long Range II” tankers can take 3 lots of 25,000mt naphtha
9(1) LR II dwt
cargoes, with dwt 80,000 - 119,999 dwt and coated.
“Long Range I” tankers can take 2 lots of 25,000mt naphtha
9(2) LR I cargoes, with between 60,000 – 79,999 dwt and breadth <= dwt
32.31m and coated.
Medium Range, or tankers between 35,000 – 59,999 dwt without
9(3) MR dwt
IMO notation and coated.
Product 20,000 - Tankers between 20,000 - 34,999 dwt, without IMO notation and
9(4) dwt
34,999 dwt coated.
Product 10,000 – Tankers between 10,000 - 19,999 dwt without IMO notation and
9(5) dwt
19,999 dwt coated.

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 Worldyards Segment Definitions
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Product 5,000 - Tankers between 5,000 – 9,999 dwt without IMO notation and
9(6) dwt
9,999 dwt coated.
Product
9(7) Tankers between 0 – 4,999 dwt without IMO notation and coated. dwt
0 – 4,999 dwt

10. Product/Chemical Tankers

Capacity
Sub-segment Definition
Measure
Tankers 35,000 – 80,000 dwt with IMO 3 notation and/or IMO 2,
10(1) MR/Chemical dwt
< 7 grades, and coated
Product/Chemical
Tankers with IMO 3 notation and/or IMO 2, < 7 grades, between
10(2) 20,000 - 34,999 dwt
20,000 – 34,999 dwt, either coated or stainless steel
dwt
Product/Chemical
Tankers with IMO 3 notation and/or IMO 2, < 7 grades, between
10(3) 10,000 – 19,999 dwt
10,000 – 19,999 dwt, either coated or stainless steel
dwt
Product/Chemical Tankers with IMO 3 notation and/or IMO 2, < 7 grades, between
10(4) dwt
5,000 - 9,999 dwt 5,000 – 9,999 dwt, either coated or stainless steel

Product/Chemical Tankers with IMO 3 notation and/or IMO 2, < 7 grades, between
10(5) dwt
0 - 4,999 dwt 0,000 – 4,999 dwt, either coated or stainless steel

11. Chemical Tankers

Capacity
Sub-segment Definition
Measure
Chemical 40,000 – Tankers with IMO 2 notation and/or IMO 1, >= 7 grades, between
11(1) dwt
80,000 dwt 40,000 – 80,000 dwt, either coated or stainless steel

Chemical 20,000- Tankers with IMO 2 notation and/or IMO 1, >= 7 grades, between
11(2) dwt
39,999 dwt 20,000 – 39,999 dwt, either coated or stainless steel

Chemical 10,000 - Tankers with IMO 2 notation and/or IMO 1, >= 7 grades, between
11(3) dwt
19,999 dwt 10,000 – 19,999 dwt, either coated or stainless steel

Chemical 5,000 - Tankers with IMO 2 notation and/or IMO 1, >= 7 grades, between
11(4) dwt
9,999 dwt 5,000 – 9,999 dwt, either coated or stainless steel

Chemical Tankers with IMO 2 notation and/or IMO 1, >= 7 grades, between
11(5) dwt
0 - 4,999 dwt 0 – 4,999 dwt, either coated or stainless steel

Other chemical Tankers with IMO 2 notation and/or IMO 1, and stainless steel,
11(6) dwt
tankers and < 7 grades

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 Worldyards Segment Definitions
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12. Specialised Tankers

Capacity
Sub-segment Definition
Measure
Asphalt/Bitumen Tankers carrying Asphalt/Bitumen with high heating requirements
12(1) dwt
Tankers (135 deg C)

Other Specialised Tankers that do not fall into the other tanker categories; such as
12(2) dwt
Tankers wine/juice/water carriers

Ships designed for oil transport from an off-shore oil field. It is

equipped with off-loading equipment compatible with the oil
field in which she is employed. This normally consists of a taut
hawser arrangement or dynamic positioning to maintain the
12(3) Shuttle Tankers dwt
position relative to the field, an off-loading arrangement of
pipes, and redundant safety systems to ensure that the
potentially flammable crude oil is handled safely in a harsh
environment.
Vessels purpose-built to supply fuel to ocean-going vessels
usually operating within port limits. They are not product tankers
because they are not coated (even though it is not unusual to have
product tankers operating as bunker tankers), fitted with heating
coils and generally have only 2 segregations (sometimes 3 grades).
But they are not crude tankers in the sense that they do not have
COW and IGS. Additionally, they have some or all of the
following bunkering related equipments:
- hoistable pneumatic fenders
Pure Bunker
12(4) - bunker boom dwt
Tankers
- sometimes have flow meters at the manifold
- CPP
- stern discharge
- bow thruster

Aged ocean-going product tankers/crude tankers could also be

used as bunker tankers but they will be counted in their respective
original sub-segments.

13. Specialised cargo (Specialised cargo I)

Capacity
Sub-segment Definition
Measure
Vessels that are specifically designed to carry cement in dry bulk
form. Also, they are equipped with specialised cargo
13(1) Cement carriers dwt
loading/discharging systems which are either mechanical or
pneumatic.

Also known as ‘Train Wagon Carriers’ or ‘Rail

Ferries’, are a type of RoRo ship fitted with rail tracks. Ships of
this category often include hydraulic elevator platforms serving
multiple decks. Rail wagons are often loaded by shore
13(2) Wagon carriers No of wagons
locomotives but shifted on board by devices called
“shunters.” Vessels of this type are generally configured to
accommodate up to fifty 12 m long rail wagons each weighing up
to 100 tonnes. Upper range of deadweight is typically 5,000 dwt.

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Refrigerated ships that are designed to carry goods requiring

refrigeration, such as meat, fish, fruits and dairy products. A reefer
ship has insulated holds into which cold air is passed at the
13(3) Reefers temperature appropriate to the goods being carried. Reinforced cbft
decks allow for forklifts to handle palletised cargoes. Depending
on whether containers are carried, these ships generally have light
cargo gear of about 5 tonnes for lifting pallets.

RoRo is short for “roll-on, roll-off.” This is a specialised vessel

type fitted with stern, side or bow door with all decks served by
ramps. Such ship are tailored to transport a combination of heavy
13(4) RoRo Cargo rolling cargo, standard vehicles and static cargoes such coiled gt
steel on mafi trailers. Capacity is measured by a variety of means
including lane metres, GT, cubic metres loading capacity and
deck space.

A hybrid, specialised vessel type with ramps serving vehicle decks

13(5) RoLo gt
but with other cargo decks accessible only by cranes.
Other specialised All specialised cargo ships (such as livestock carriers, limestone
13(6) gt
cargo carriers) that does not fit into the above types

14. Vehicle Carriers (specialized cargo II)

Capacity
Sub-segment Definition
Measure

Pure Car Carriers (PCC) are RoRo vessels specially designed for
14(1) PCC carrying automobiles, and other small wheeled units. Equipped ceu
with ramps and multiple decks of which some are moveable.

Pure Car & Truck Carriers (PCTC) are RoRo vessels specially
designed for carrying automobiles, trucks, and other rolling stock.
14(2) PCTC Equipped with ramps and multiple decks of which some are ceu
moveable. Vessels which can carry 8,000 cars or more about are
known as LCTCs

15. Heavy-Lift Cargo (specialized cargo III)

Capacity
Sub-segment Definition
Measure

Also called Flo-Flo (for float-on/float-off). Vessels used to

transport heavyweight unitized cargo - they are shallow drafted
15(1) Semi-submersibles ships that are designed to take in ballast water and submerge their dwt
decks beneath the project, offshore equipment or other cargoes,
and then raise the cargo above water level and transport the cargo.

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 Worldyards Segment Definitions
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Vessels that can handle heavy loads of generally above 1,000 MT
with cranes or via a roro access. The vessels can not submerge.
These vessels have significant ballasting requirements. Shipyards
15(2) Non-submersibles have used these vessels for block transfer and in cases adapted dwt
them for offshore module transport. In the offshore segment they
are called deck carriers.

Docktype semi-submersibles are a category of semi-submersibles

Docktype semi- that carry cargoes, often small vessels such as yachts in the fully
15(3) dwt
submersibles enclosed hull. Their main features are the dockwalls, which make
them resemble floating docks.

16. Passenger ships

Capacity
Sub-segment Definition
Measure
Cruise ship. Also known as a cruise liner, is a ship for passengers
on a pleasure voyage. Cruise ships have extensive amenities.
Some definitions distinguish cruise ships from the ocean liners
which transport passengers from one point to another, rather than
16(1) Cruise ship on round trips. The Worldyards database of cruise ships covers gt
vessels of 10,000 gt and greater. Smaller vessels are not covered to
differentiate the sub-segment from super yachts. The Cruise Ship
sub-segment’s measure of scale is gross tonnage, while lower
berths is another sub-segment specific measure.

Roro vessels designed for transporting both people and vehicles on

16(2) Pax ferry no of pax
short sea routes.
Roro vessels primarily designed for transporting trucks or trailers
on short sea routes but with additional facilities for the carriage of no of pax/ lane
16(3) Ro-Pax
passengers / drivers of vehicles, sometimes with cabin metres
accommodation.

17. Fishing Vessels

Capacity
Sub-segment Definition
Measure
Fishing vessels with trawl gallows for side trawl net fishing or a
17(1) Trawlers dwt
stern ramp and trawl gallows for stern trawl net fishing.
Purse Seine Vessel designed for fish catching operations other than that of
17(2) dwt
Fishing trawling.
Vessel specially designed for the processing of fish caught by
17(3) Fish Factory Ships dwt
other ships.
17(4) Other Fishing Fishing support, fish carrier, whale-catcher. dwt

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 Worldyards Segment Definitions
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18. Barges
Capacity
Sub-segment Definition
Measure
Flat bottomed vessel without propulsion that works in canals,
18(1) Dumb dwt
rivers and coastal areas.
Flat bottom vessel with own propulsion that works in canals,
18(2) Self propelled dwt
rivers and coastal areas.

19. Dredgers
Capacity
Sub-segment Definition
Measure
A backhoe/dipper dredge has a backhoe like excavators. A crude
Backhoe/Dipper
19(1) but usable backhoe dredger can be made by mounting a land-type cubic
Dredgers
backhoe excavator on a pontoon.
A bucket dredger is a dredger equipped with a bucket dredge,
which is a device that picks up sediment by mechanical means,
19(2) Bucket Dredgers often with many buckets attached to a wheel or chain. Some cubic
bucket dredgers and grab dredgers are powerful enough to rip out
coral reef to make a shipping channel.
Most cutter suction dredgers are stationary, which means they
have to be towed to their work site by tugboats. Once in position,
so-called spud poles keep the cutter dredger in place. The cutter
head, which is mounted on the far end of the cutter ladder, is
Cutter Suction lowered to the seabed with the help of winches. The turning cutter
19(3) kw
dredgers head cuts into the soil as it is pulled across the bottom
horizontally. The loose material is dredged up and pumped to its
destination through a floating pipeline. Cutter suction dredgers are
pre-eminently suitable to dredge out hard soil or to pump up large
amounts of sand in shallow water.
Dustpan dredgers are only suitable for use on flat bottoms with
thin layers of silt. In order to minimize turbidity the use of jetting
water is not recommended, but jetting water is required to draw in
19(4) Dustpan Dredgers the silt over the full breadth of the suction mouth. Positioning in cubic
the vertical plane is good, while positioning in the horizontal plane
is moderate, depending on the anchoring system. This type of
dredger is not suitable for cohesive materials like clay.
A grab dredger picks up seabed material with a clamshell grab,
Grab / Clam which hangs from an onboard crane, or is carried by a hydraulic
19(5) cubic
dredgers arm, or is mounted like on a dragline. This technique is often used
in excavation of bay mud.
The most prominent feature of a water injection dredger is its long
injection beam underneath the vessel. Through this injection beam,
large quantities of water are injected into the bottom under low
pressure. The thus created sand-and-water mixture flows away to
Water injection the sides under the influence of gravity. And the result is the
19(6) cubic
dredgers intended trench in the bottom. Water injection dredging is a cost
efficient way to carry out maintenance dredging in silted up
navigation channels and ports. The technology is the successful
result of research and product innovation, in a joint effort of Van
Oord and Delft Hydraulics.

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A stationary dredger used to mine for sand. The suction pipe is

pushed vertically into a sand deposit. If necessary water jets help
19(7) Suction dredgers cubic
to bring the sand up. It is loaded into barges or pumped via
pipeline directly to the reclamation area.
A trailing suction hopper dredger is a large ocean-going vessel. In
order to start dredging, the ship reduces its speed to some 1 to 2
knots and then lowers the suction pipes on both sides of the ship
all the way to the seabed. Sand pumps transfer the sand dredged up
by the suction head into the hold or hopper. The excess water is
drained off via the overflow pipes. When the hopper is full, the
ship sails to its destination, the reclamation area. There it unloads
Trailing Suction its cargo in one of the following manners:
19(8) cubic
Hopper Dredgers a) pump the sand through a pipeline when the dump site is at some
distance;
b) unload the sand through the bottom doors when in deeper water;
c) rainbowing, through a spout on the bow, when the ship is able
to come close to the site.

Trailing suction hopper dredgers are able to transport large

amounts of sand over long distances.
Includes miscellaneous types of dredgers not covered above
19(9) Misc dredgers cubic
including Underwater plough, etc

20. Service / Miscellaneous Vessels

Capacity
Sub-segment Definition
Measure
A special purpose vessel designed to move and navigate through
20(1) Ice Breakers ice-covered waters. They break the ice and make a path for the gt
other ships to navigate through the ice.

These are vessels dedicated to various types of research at sea,

20(2) Research Vessel including by not limited to oceanographic, meteorological, gt
seismic, etc.

These are vessels that are dedicated for training seafarers in either
20(3) Training Vessel gt
in an anchored or sailing status.
Not ocean-going vessels, specially designed for the Great Lakes
20(4) Lakes-only Vessels dwt
area.
Vessels designed with a single deck hull and to run on to a beach
20(5) Landing Craft or a shore ramp prior to the loading/unloading of road vehicles, dwt
and other cargo by way of wheeled transport

A specialised group of vessels characterised by sheaves and

Cable laying gantries at the bow and stern. There are also cranes for lowering
20(6) Water depth
vessels an ROV (remotely operated vehicles). The cables are used for
telecommunications or high voltage power transmission.

All vessels that do not fall into any of the above sub-segments
Other service /
20(7) such as Nuclear Fuel carrier, Alumina Carrier, Search & Rescue gt
Misc Vessel
and Fire-fighting Vessels.

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 Worldyards Segment Definitions
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21. Naval
Capacity
Sub-segment Definition
Measure
Vessels used by military forces. The details of such vessels are not
21(1) Naval tracked by Worldyards.com other than for shipbuilding capacity displacement
analysis.

Note : According to OECD the CGT rules do not apply to offshore structures except when structures are built in a way that
meet the IMO’s rules for ships, in which case they can be considered NCCVs (non cargo carrying vessels).

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