1. A modular removable externally mountable diesel hydraulic thruster system for dynamic positioning of a floating semi-submersible vessel with a ballasted waterline comprising at least one submerged pontoon, and wherein each submerged pontoon is provided with at least one vertical column integral with a top of the at least one submerged pontoon, and wherein each vertical column supports a deck above the ballasted waterline, and wherein the modular removable externally mountable diesel hydraulic thruster system comprises:
a. at least a pair of azimuthing thrusters wherein each azimuthing thruster is removably mounted to the at least one submerged pontoon of the floating semi-submersible vessel, and wherein each azimuthing thruster generates a variable thrust and each azimuthing thruster comprises:
1. a skid removably secured to the top portion of the submerged pontoon below the ballasted waterline;
2. an upper thruster housing removably connected to the skid, containing a slewing bearing with at least one hydraulic motor driven slewing drive, at least one electric steering angle feedback sensor for indicating the steering angle of the azimuthing thruster and a multiport hydraulic swivel assembly;
3. a tube moveably connected to the upper thruster housing and removable connected on the other end to a hydraulic pod with nozzle;
4. a hydraulic motor inside the hydraulic pod with a rotating propeller drive shaft whereby a fixed pitch propeller is removably mounted to a propeller drive shaft that engages the propeller drive shaft; and
5. a bundle of thruster hydraulic hose assemblies connected to at least one of the hydraulic motors on one end to the multiport hydraulic assembly on the other end;
b. at least a pair of diesel hydraulic power units removably secured to the deck, wherein each diesel hydraulic power unit engages one of the azimuthing thrusters, wherein each diesel hydraulic power unit comprises:
1. a power unit housing;
2. a diesel engine driven hydraulic pump package within the power unit housing;
3. at least one hydraulic fluid reservoir;
4. a fuel tank connected to the diesel engine;
5. a cooling system;
6. a starting system connected to the diesel engine;
7. an exhaust system connected to the diesel engine;
8. a bundle of hydraulic hose assemblies, wherein at least one hydraulic hose is connected to the hydraulic motor within the hydraulic pod; and
9. a control system communicating with the azimuthing thruster;
c. a dynamic positioning system connected to the diesel hydraulic power unit; and
d. at least two position reference sensors and at least two environmental reference sensors connected to the dynamic positioning system.
2. The system of claim 1, wherein 1 pair to 15 pairs of azimuthing thrusters are removably mounted to each pontoon.
3. The system of claim 1, wherein the diesel hydraulic power unit is driving at least one hydraulic steering motor or an auxiliary variable frequency drive is driving at least one electric steering motor.
4. The system of claim 1, further comprising at least one engine mount for supporting the diesel engine.
5. The system of claim 1, wherein the position reference sensor is selected from the group consisting of: global positioning system (GPS) sensors; hydro-acoustic sensors; fan beam laser sensors; Artemis system signal sensors; vertical taut wire system sensors, horizontal taut wire system sensors; differential and absolute reference positioning system (DARPS) sensors.
6. The system of claim 1, wherein the dynamic positioning system further comprises at least one uninterruptible power source connected to the dynamic positioning system.
7. The system of claim 1, wherein the diesel hydraulic power unit is removably secured to the deck.
8. A semi-submersible vessel comprising at least two pairs of azimuthing thrusters as defined in claim 1.
9. The semi-submersible vessel of claim 8, wherein the semi-submersible vessel is a semi-submersible drilling vessel, a semi-submersible crane vessel, a floating dry dock, an accommodation vessel, a construction support vessel, a multi-column semi-submersible vessel, a semi-submersible work-over vessel, floatover vessel, or a space craft launching platform.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A phthalate-free plasticizer preparation comprising
a) from 70 to 98% by weight of at least one aryl alkylsulfonate of the formula R1\u2014SO2\u2014O\u2014R2 and
b) from 2 to 30% by weight of at least one diol dibenzoate of the general formula R3C(O)O\u2014Y\u2014O(O)CR4 or of at least one dibenzyl dicarboxylate of the general formula R3CH2O(O)C\u2014Z\u2014C(O)OCH2R4 or a mixture of the formulae R3C(O)O\u2014Y\u2014O(O)CR4 and R3CH2O(O)C\u2014Z\u2014C(O)OCH2R4, where the total of the percentages by weight of all of the components of the preparation is 100% and in which
R1 is a straight-chain or branched C1-C20-alkyl radical,
R2 is a phenyl radical optionally substituted with C1-C4-alkyl or with halogen,
Y is an alkylene radical optionally containing ether groups and having at least 2 carbon atoms,
each of R3 and R4 independently of the other is a phenyl radical optionally substituted with C1-C4-alkyl or with halogen, and
Z is a saturated or unsaturated, straight-chain or branched, cyclic or polycyclic C2-C10-hydrocarbon radical, where the total of the percentages by weight of all of the components in the plasticizer preparation is 100%.
2. A plastic comprises the phthalate-free plasticizer preparation of claim 1.
3. The phthalate-free plasticizer preparation according to claim 1, wherein the radical R1 is a C10-C20-alkyl radical.
4. The phthalate-free plasticizer preparation according to claim 1, wherein the ester of the structure R3C(O)O\u2014Y\u2014O(O)CR4 is diethylene glycol dibenzoate, triethylene glycol dibenzoate, dipropylene glycol dibenzoate, or tripropylene glycol dibenzoate.
5. The phthalate-free plasticizer preparation according to claim 1, wherein the ester of the structure R3CH2O(O)C\u2014Z\u2014C(O)OCH2R4 is dibenzyl adipate.
6. The phthalate-free plasticizer preparation according to claim 1 or 2, wherein the radical Z derives from succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid or sebacic acid.
7. The plastic as claimed in claim 2 comprising in addition to components a) and b), additives from the group of light stabilizers and other stabilizers, lubricants, fillers, pigments, flame retardants, blowing agents, polymeric processing aids, impact modifiers, optical brighteners, antistatic agents andor biostabilizers, or else a mixture thereof.
8. The plastic as claimed in claim 2, which is polyvinyl chloride, vinyl-chloride-based copolymers, polyvinylidene chloride, polyvinyl acetals, polyacrylates, polyamides, polyurethanes, polylactides, polylactic acids, cellulose or its derivatives, or rubber polymers including acrylonitrile-butadiene rubber, hydrogenated acrylonitrile-butadiene rubber, chloroprene rubber, chlorinated polyethylene, chlorosulfonylpolyethylene, ethylene-propylene rubber, acrylate rubber or epichlorohydrin rubber.
9. A method of using the plastic of claim 2 comprising incorporating said plastic into articles for use in pipelines, cables, wire sheathing, in internal fittings, or in the construction of vehicles or of furniture, or in floor coverings, medical items, food packaging, gaskets, foils, composite foils, foils for laminated safety glass, in the vehicle sector, in the architectural sector, or in synthetic leather, toys, packaging containers, adhesive-tape foils, apparel, coatings, or else fibers for textiles.
10. The plastic according to claim 2, wherein the radical R1 is a C10-C20-alkyl radical.
11. The plastic according to claim 2, wherein the ester of the structure R3C(O)O\u2014Y\u2014O(O)CR4 is diethylene glycol dibenzoate, triethylene glycol dibenzoate, dipropylene glycol dibenzoate, or tripropylene glycol dibenzoate.
12. The plastic according to claim 2, wherein the ester of the structure R3CH2O(O)C\u2014Z\u2014C(O)OCH2R4 is dibenzyl adipate.
13. The plastic according to claim 2, wherein the radical Z derives from succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid or sebacic acid.