Remotely Operated Tank Inspection System (ROTIS)

An EU funded project for the development of a remotely operated vehicle (ROV) for in-water thickness measurements and inspections of hull structures inside ballast tanks has been undertaken and completed successfully.

An overview of this vehicle is shown in the pictures below:


Transportation of Natural Gas in Compressed Condition (CNG Carrier)

CS & Associates S.A. have been involved in the study and design of compressed natural gas transportation systems since 1998 and are now in a position of developing a CNG carrier with onboard facilities for the storage of natural gas in composite pressure vessels that introduces many advantages, such as competitive investment cost, operational flexibility, etc.
Such vessels can be entirely autonomous and thus not dependent on port facilities.
Several concept designs have been developed and presented such as:

 

a) FL.E.E.T. (FLEXIBLE ECONOMICAL ECOLOGICAL TRANSPORT) of CNG – PROPOSAL TO THE EUROPEAN COMMISSION

This is a unique platform for the safe and commercial marine transportation of compressed natural gas in high-pressure modules carried in a new or in a suitably modified existing vessel, as shown in figure 1 below.
It can also be used as a storage vessel while a second one returns loaded. Additionally the power utilized for compressing the natural gas can be converted to electricity and supplied together with the natural gas.

Figure 1
Figure 1

 

b) CONCEPT DESIGN OF CNG PROTOTYPE CARRIER VESSEL-PROPOSAL FOR INTEREST IN THE CAPSIAN SEA
This is a totally autonomous highly optimized design of a Prototype CNG Carrier Vessel providing alternatives for numerous applications.

An overview of this vessel is shown in Figure 2 bellow.

Figure 2

 

c) CONCEPT DESIGN OF CNG ELECTRICALLY DRIVEN PROTOTYPE CARRIER VESSEL- PROPOSAL FOR USE IN THE MEDITERRANEAN SEA
This is a further improved totally autonomous highly optimized design, of a Prototype CNG Carrier Vessel providing alternatives for numerous applications.

An overview of this vessel is shown in Figure 3 below.

figure3
Figure 3

For the development of the concepts indicated in Figures 1,2 and 3 above, the basic factors and parameter required for the completion of a full design and it’s implementation have been investigated and involve but are not limited to, the following:
An analysis of the Natural Gas Worldwide Network and the feasibilities of CNG implementations.
The optimum type, size and carrying capacity of the vessel
The time and cost for the preparation of a full design
The availability, cost and delivery times of the required compressed natural gas modules
The availability, cost and installation time of the suitable arrangements and the systems for loading the natural gas from its source in its natural form, compressing it and delivering it to the consumer’s end decompressed at the required pressure.
The required time and cost for the construction of a suitable vessel or vessels to accommodate the above
A close estimate of the overall cost and time required for the construction of a vessel (unit) of specific capacity and characteristics.

d)CONSEPT DESIGN & APPROVAL IN PRINCIPLE OF A PROTOTYPE AND AUTONOMOUS NATURAL GAS CARRIER WITH SHELF MEANS OF LOADING AND DISCHARGING ON ITS SPECIAL CARGO MODULES.

The latest developments and updates have been concluded to a versatile and flexible version of a prototype and autonomous CNG carrier which shall be able to perform by its own means the loading and discharging of natural gas with the specially allocated cargo handling system onboard. This concept and the initial plans that have been produced are already submitted to a major classification society (American Bureau of Shipping) for approval in principle (AIP) of this novel concept. The successful and fruit full result of this submission to the class mandates the feasibility and economical and commercial utilization of such a concept carrier as seen in the current liquid and abrupt energy market.

GA CNG