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GENERAL SPECIFICATION
INTRODUCTION
 1.INTRODUCTION
 1.1General Service
 *The “300ft S.E.U.” is a jack-up self-elevation unit designed
as a drilling and repairing rig for offshore oilfield
production;
 *The unit configuration and design has also considered for
wind turbine installation and repairing;
 *The deck area of the unit is about 970 m² and can be
applied as a living support vessel with the living module;
GENERAL SPECIFICATION
INTRODUCTION
 *The unit contain Four Main generators can supply
4800Kw power;
 *Two cranes be installed around the forward two legs
and have max 190t lifting capacity for offshore service.
GENERAL SPECIFICATION
INTRODUCTION
 1.2 Rules, Regulations and Convention
 1.2.1 The construction of the unit shall satisfy the
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following existing applicable rules,regulation and
conventions;
The applicable rules and regulations issued by ABS
Guide for building and Classing Mobile offshore
Units(2008)
Rules for Building and Classing Mobile Offshore
Drilling Units(2008)
Steel Vessel Rules 2009
GENERAL SPECIFICATION
INTRODUCTION
 1.2.2 The applicable international rules and regulations:
 SOLAS(Consolidated edition 2004)and amendment
 IMO Code for the Construction and Equipment of
Mobile Offshore Drilling Units(bound edition 2001)
 IMO International Load Lines Convention and
Protocol for International Load line Convention(1988)
 IMO Convention on the International Regulations for
Preventing Collisions at Sea 1972 and Amendment
GENERAL SPECIFICATION
INTRODUCTION
 IMO International Convention for the Prevention of
Pollution from Ship (MARPOL 73/78)(Consolidated
Edition 2006) and Annex
 International Convention on Control of Harmful Antifouling System on Ships
 International Convention on Tonnage Measruement of
Ships 1969
GENERAL SPECIFICATION
GENERAL DESCRIPTION AND SPECIFICATION
 2. GENERAL DESCRIPTION AND SPECIFICATION
 2.1 General Description
 2.1.1 The unit principally length overall is 49.20m (161.4ft)
long, 42.67 m (140ft) wide, and 6.80 (22.3ft) deep at the
hull side (amidships). The unit service depth 5-45m (16.4147.6ft) at the air gao 20m (25.6ft), and it also can service at
depth of 5-50m(16.4-164ft) at air gap 15m (49.2ft). Three
legs position as an approximately equilateral triangle. The
two legs forword are positioned symmetrically. The aft leg
is positioned on centerline.The spud cans 11.7m × 11.7m ×
1.5m. The total leg length, including the spud can, is
approximately 91.44(300ft).
GENERAL SPECIFICATION
GENERAL DESCRIPTION AND SPECIFICATION
 2.1.2 The accommodation area provides space for
catering, hospital, offices, meeting room and
recreational facilities in addition to accommodations
for a crew complement of up to 47 persons, as shown
in the general arrangement plans.
 2.1.3 The unit is to be outfitted with a system of two
diesel driven fixable pitch propellers one bow tunnel
thruster and one stern tunnel thruster to allow self
propulsion for field moves and positioning without
outside assistance.
GENERAL SPECIFICATION
GENERAL DESCRIPTION AND SPECIFICATION
 2.1.4 The unit will further be outfitted with a ballast
system for ballasting / de-ballasting of ballast tanks in
order to optimize the pre-loading of the unit if
required or where pre-diving is not feasible.
 2.1.5 The main particulars of the unit are as follow:
GENERAL SPECIFICATION
GENERAL DESCRIPTION AND SPECIFICATION
 Hull Particulars:
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*length overall
*length molded
*Breath molded
*Depth molded
*Design draught
*Design speed
*Max.Jacking variable load
*Service depth
*Air gap
*Deck stress
*Main deck area
49.20m (161.4ft)
46.80m (153.5ft)
42.67m(140ft)
6.80m (22.3ft)
3.60m(11.8ft)
6.0kn
1200t
5-50m(16.4-164ft)
20m(65.6ft)
4.8 t/m²
>970 m²
GENERAL SPECIFICATION
GENERAL DESCRIPTION AND SPECIFICATION
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Leg,Spud can and jacking system particulars
*Leg configuration
columnar with spline
*Leg diameter
2.8 m(9.2ft)
*Leg length(including spud can) 91.44m(300ft)
*Spud can dimension
11.7m × 11.7m(38.4ft × 38.4ft)
*Jacking system
hydraulic
*Jacking speed
1.22m/min(4ft/min)
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Accommodation (total 47 persons)
*Single cabins ×3 =3p
*2-men cabins × 2=4p
*4-men cabins × 10=40p
GENERAL SPECIFICATION
GENERAL DESCRIPTION AND SPECIFICATION
 2.2 Performance Critera and Design Conditions
 2.2.1 Design Operating Conditions
Woking
state
Depth Wave
(m)
heigh
(m)
Peiod
(s)
Velocity
(m/s)
At
At mud
surface line
(m/s)
(m/s)
AirGap
(m)
Working1 50
6.5
6.5
25.7
1.03
0
16
Workin2
45
6.5
6.5
36
1.03
0
20
Storm
survival
15
9.3
9.8
51.5
1.8
1.03
12
GENERAL SPECIFICATION
GENERAL DESCRIPTION AND SPECIFICATION
 2.2.2 Environmental Criteria
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Atmosphere temperature
-10°C
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Water temperature
-2° C
 2.2.3 Tank Capacities
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The detailed tank sizes are to be defined by the tank plan drawing.
Tank
Capacity m3
Tank
Capacity m3
Fuel oil tank
318.8
Seawater
storage tank
Lube oil tank
Fuel oil day
tank
64.83
Waste Oil TK
10.9
Fresh water
tank
339.90
Bilge water
tanks
33.4
Ballast tank
2520.14
132.9
4.4
GENERAL SPECIFICATION
LEG,SPUDCAN AND JACKING SYSTEM
 3.LEG,SPUDCAN AND JACKING SYSTEM
 The leg is a cylindrical type which outside diameter is
2800mm.The leg length including apud can is
91.44m(300ft).The bottom of spud can is 11.7m × 11.7m
rectangle. Each leg is connected to the hull by means of
jacking gear units. The unit contains hydraulic motor,
jacking pinion. The jacking units can jack/lower the leg or
main hull raising to satisfy the operation requirement.
 The jacking system consist of electric control and hydraulic
drive, each leg equip with 14 sets jacking hydraulic motor,
HPU, planetary gear box, jack pinion, brake, inclinometer
etc.
GENERAL SPECIFICATION
LEG,SPUDCAN AND JACKING SYSTEM
 Main parameters:
 Normal jacking capacity:
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1400 T per leg
Preload Holding capacity:
1960 T per leg
Max. Severe Storm holding capacity:
2800 T per leg
Max. Jacking speed:
4FT/min with full load
HPU power source:
600V, 50Hz, 3 phase
HPU Electric Motor Rated Power:
300KW per motor
GENERAL SPECIFICATION
UNIT MAIN EQUIPMENT
 4.UNIT MAIN EQUIPMENT
 4.1 Main generator
 The unit is equipped with 4 engine generators
 Rated power: 1200kw/each
 Output voltage: 600V
 Rated Frequency: 50Hz
 Rated speed: 1800Rpm
 4.2 Emergency generator
 The unit is equipped with 1 generators
 Rated power:400kw
 Output voltage:400v
 Rated Frequency:50Hz
 Rated speed:1800Rpm
GENERAL SPECIFICATION
UNIT MAIN EQUIPMENT
 4.3 Leg ringer Crane
 Two leg ringer cranes shall be installed around the
forward two legs as one each.
 Quantiy: 2 sets
 Model: Techcrane 190t-10m(8t-43m)
 Drive type: diesel engine and hydraulic system
 Jib length:43m
 Maximum working load:190T
GENERAL SPECIFICATION
UNIT MAIN EQUIPMENT
 4.4 Propulsion system
 Main thruster
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Quantity: 2 sets
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Drive type: main engine-gear-propeller
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Input power: 1370kw
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Input speed: 0~1500Rpm
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Speed ratio: 5.9:1
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Propeller diameter: 2100mm
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Propeller type: fixed pitch
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Blades quantity: 4
GENERAL SPECIFICATION
UNIT MAIN EQUIPMENT
 Bow thruster:
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Input power: 450kw
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Input speed: 1800Rpm
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Propeller diameter: 1300mm
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Propeller type: Variable pitch
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Blades quantity: 4
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Motor: 600v/3ph/50Hz
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 Stern thruster
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Input power: 450kw
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Input speed: 1800Rpm
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Propeller diameter: 1300mm
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Propeller type: Variable pitch
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Blades quantity: 4
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Motor: 600v/3ph/50Hz
GENERAL SPECIFICATION
UNIT MAIN EQUIPMENT
 4.5 Submersible pump
 The unit is equipped with two submersible pumps and
pump towers. After the unit is elevated, the pump tower is
lowered into the sea by the tower jacking units to supply
the sea water to fire system, ballast system and cooling
system. The tower jacking unit is consisting of two electric
drive jacking units. There are two submersible pumps in
the pump tower. The pump parameters are as below:
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Flow capacity: 250m³/h
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Water head: 0.67Mpa
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Power: 75kw
General arrangement
General arrangement
General arrangement
Postscript-3D
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