SEA S.r.l. (SEA) is an Italian Company, founded in 1992, highly specialised in sea trenching works.

Its Technical Director, Mr. Franco Ballestri started to develop the first trenching and dredging systems in 1970. A pioneer in Italy when it came to studying, designing, building and introducing the “post trenching system” to bury underwater pipelines and cables. His methods have been so innovative and functional that all the post-trenching machines, in Italy and in the world to the present day, follow his technology.

SEA can also count on the collaboration of around 50 employees having different roles and competences.

The experience, combined with a team of young technicians and engineers, allows SEA to be a continuously evolving company, focused on the search for new systems and equipment.

The Company’s headquarters are in Ravenna, (offices and workshop of approx. 1000 m²). However, SEA also has collaboration agreements in place with other companies in Europe (SERVIZI ECOLOGICI AFFOSSAMENTI SEA MALTA LTD.) and in South America (SEA BRASIL SERVIÇOS SUBMARINOS LTDA in Brazil and SEA S.R.L. SUCURSAL URUGUAY in Uruguay) that render their offices/bases available to SEA’s operations in various countries all over the world.

  • Malta plays a fundamental role being in the centre of the Mediterranean sea: for this reason, it is the naval means base.Furthermore, as SEA is able to take advantage of a very functional base (6.300m² workshop – of which 2.800m² covered and 3.500m² outdoors) and of highly specialized personnel, SEA is able to build the equipment designed in Ravenna, and to carry out maintenance operations.
  • South America, in particular, Brazil, is an important base for all of SEA’s activities in that area, and is the place in which the main projects have been carried out. In Rio de Janeiro, SEA can count on spacious offices, a warehouse and area that is ideal for the mooring of vessels.

SEA is well connected to the biggest Petrol and Construction Companies, because it has successfully completed various projects (including different types of shore approaches) in many countries (Brazil, Nigeria, Russia etc.)

The Companies work in compliance with ISO 9001 and ISO 14001 specifications.


SEA differs from other Companies in the same field thanks to its ability to offer an all-round service to its Clients. Starting from designing and building of its machinery (supervising the engineering part), up to the execution of trenching works.

SEA’s main characteristic is the extreme versatility of its machines, which are suitable to perform trenches in most types of seabeds and with pipelines of various diameters.

SEA has always been capable of solving all problems encountered during project execution, thanks to the Company’s dynamicity, technical readiness and continuous development of its equipment.

SEA’s main activities are the following:

  • Burial of sea lines using the post-trenching method:
    • from 3” to 60” in diameter;
    • bundled lines;
    • piggy-backed lines.
  • Carrying out open trenches, so that pipelines/cables can be laid (pre-trenching)
  • Shore approaches using Post-trenching and Pre-trenching systems, even in very hard seabeds (limestone rock, coral, calcarenite and cemented sand) without having to rely on a cofferdam for support, thanks to the RACK, SEA’s new patented technology;
  • Laying and burial of electrical, power and optic-fibre cables;
  • Uncovering of sea lines and cables;
  • River crossings;
  • Installation and assembly of small diameter pipelines;
  • Hydraulic control of sea lines;
  • Environmental restoration in port, channel and river beds;
  • Sea line repairs.


SEA works in compliance with ISO 9001 standards and follow the ISO 14001 specifications whilst working towards obtaining the Occupational Health and Safety Management Systems certification (OHSAS 18001).

SEA has always worked according to certain Quality and Safety standards, which naturally brought the Company to become certified ISO 9001:2008 in November 2010, (which is always renewed through internal and external audits carried out by the Competent Organizations). Being in contact with the major Construction Companies in the World (multi-national companies in the Offshore sector, such as BP, Saipem, Petrobras, Petrofac, Global Industries, Acergy), SEA has made international Quality and Safety requirements a basis for its own way of working.

SEA’s Quality Management System is certified for the following field activities:



SEA S.r.l.’s Top Management believes Quality to be a cornerstone in the Company’s strategy and promotes commitment to Quality at all organizational levels. Aware of its leadership role, Top Management spreads and supports commitment to meet the requirements of the Quality Management System and to improve its effectiveness. Moreover, the Top Management communicates, to the entire organization, project development tasks, bid submission, carrying out work supervision and project management of all Company projects.

The Quality of the carried-out activities and tasks, the Environmental Safeguard and the Health & Safety of the workers have always been SEA S.r.l.’s main targets.

The UNI EN ISO 9001:2008 certification, which is at the core of the Company’s development policies, allows reached targets to be further developed, and is initially put into action, starting from Client’s expectations, through defining all the Company’s targets and all related individual sub-targets, which are constantly monitored by specific markers.


The Top Management mostly focuses its commitment on the prevention of any potential non-conformity, by optimizing management and order handling, and in doing so, by granting a constant safeguard of the processes and of the activities that are in any way connected to the Quality of the provided services.

The Top Management considers as priority, before all else, the target of “Client Satisfaction”, which is subject to constant attention, in order to grant the compliance with the specified requirements and to satisfy the legal and regulatory instructions that are possibly applicable.

The Client’s orientation and satisfaction are granted through:

  • Attention to the Market, in order to correctly interpret and anticipate Clients’ future needs related to the development of the organizational models that have been undertaken through the activities that Clients are engaged in;
  • Technical and professional expertise of the assigned personnel, in order to provide the Client with all useful information for his/her operational and developmental choices;
  • Use of innovative technologies and of constantly advanced components, which are efficient and comply with specific Client’s needs and with applicable binding requirements;
  • Meeting processing lead-times regarding preliminary Planning & Development activities of equipment and distribution systems;
  • Promptness in dealing with any issue and any incomprehension, and in finding most suitable solutions;
  • Giving maximum availability towards the Client, so that he/she can also improve his/her own commercial, economic and financial results, by taking advantage of the Company’s competence and experience.

In line with the above-mentioned targets, considering Personnel’s professional skills and the efficiency of technology, Top Management has identified valuable resources to fully satisfy its own Clients’ requirements and therefore plans to lead the Company to a constant organizational and methodological growth.

For this purpose, the Top Management commits itself so that in the Company:

  • A professional and safe work environment is guaranteed;
  • A “Team Spirit” is nurtured and ingrained, encouraging competence and creativity to every worker;
  • Most skilled and motivated workers are appreciated, in order to orientate the Company’s performance towards success;
  • Needs and suggestions of workers are evaluated and satisfied, if in line with Company needs.

In order to meet the above-mentioned targets, the Top Management constantly plans and puts in place the introduction of new and better Client-aimed services and systems through Planning and Realization processes. This is made possible by building constant collaboration relationships with goods & service suppliers, and by putting in force continuous involvement, training and updating activities for personnel, at any level and specifically of personnel involved in processes that have an impact on the Quality of services offered.

The personnel is therefore required to comply with what reported in the Quality Manual, for activities he/she is concerned with, and with Quality Manual-related documentation (procedures, instructions and specifications), and to carry out the foreseen registrations.

Each SEA S.r.l.’s worker is moreover committed in providing a service of irreproachable quality, not only towards external Clients, but also towards other colleagues and partners.


The Quality Policy that is defined by the Top Management, in line with the other Company Policies, sets the following general targets:

  1. Client satisfaction;
  2. Personnel satisfaction, by acknowledgment of the met results and by definition and implementation of professional growth plans;
  3. Guarantee of Health & Safety conditions at the workplace;
  4. Partners’ satisfaction, by improvement of economic and financial results, and by granting full compliance with all applicable regulations;
  5. Quality System improvement.

The Top Management’s Quality Policy commitments, which are included in the present document, will be turned into a system of yearly identifiable and measurable targets, as part of a specific Development Plan, for which the Top Management commits itself and guarantees the supply of all necessary support and resources.

The Quality Policy is notified to personnel by display, which is visible to all in an accessible area, and through periodical meetings.


In order to ensure meeting the above-mentioned commitments and targets, the Top Management has nominated the Quality Manager as responsible for activities regarding adjustment, maintenance and improvement of the Quality Management System.

In carrying out his/her task, the Quality Manager can request and count on the support of the assigned Managers.

The Quality Manager will arrange periodical audits on the Quality Management System, in order to check its suitability and to detect possible needs for adjustment and for improvement.

In this regard, the Top Management ensures:

  • Monitoring and checking of the yearly Quality Policy targets;
  • Re-evaluation of the Quality Policy (on yearly basis);
  • Evaluation of the suitability of the Quality System and of suggestions made regarding possible adjustments and/or improvements to the Quality System structure (on yearly basis);

Verification of the Client’s requirements (through Client-satisfaction tests or self-evaluation tests).

Privacy Policy

Privacy Policy of www.seatrenching.it
This Application collects some Personal Data from its Users.

Personal Data collected for the following purposes and using the following services:


  • Google Analytics
    Personal Data: Cookies; Usage Data

Displaying content from external platforms

  • Google Fonts
    Personal Data: Usage Data; various types of Data as specified in the privacy policy of the service
  • YouTube video widget and Google Maps widget
    Personal Data: Cookies; Usage Data

Contact information

Owner and Data Controller
SEA S.R.L. – Via A. Mariani 44-46 – 48121 – Ravenna (RA) Italy
Owner contact email: info@seatrenching.it

Latest update: January 30, 2019
iubenda hosts this content and only collects the Personal Data strictly necessary for it to be provided.

Show the complete Privacy Policy

Cookie Policy

Cookie Policy of www.seatrenching.it

Cookies and other Identifiers consist of portions of code placed on the User’s device that assist the Owner in providing the Service according to the purposes described.

Some of the purposes for which Identifiers are used may also require the User’s consent. Whenever consent is given, it can be freely withdrawn at any time following the instructions provided in this document.

Activities strictly necessary for the operation of this Application and delivery of the Service

This Application uses Cookies or other Identifiers to carry out activities that are strictly necessary for the operation or delivery of the Service and, therefore, do not require Users to consent. Users can disable such Identifiers by modifying their browser or device settings as described in more detail within this document, but this may affect core operational functions or result in the unavailability of the Service.

Other activities

Experience enhancement

This Application uses Cookies or other Identifiers to provide a personalised user experience by improving the quality of preference management options, and by enabling interaction with external networks and platforms.

Displaying content from external platforms

This type of service allows you to view content hosted on external platforms directly from the pages of this Application and interact with them.
This type of service might still collect web traffic data for the pages where the service is installed, even when Users do not use it.

YouTube video widget (Google Ireland Limited)

YouTube is a video content visualisation service provided by Google Ireland Limited that allows this Application to incorporate content of this kind on its pages.
Personal Data processed: Cookies and Usage Data.
Place of processing: Ireland – Privacy Policy. Privacy Shield participant.

Google Maps widget (Google Ireland Limited)

Google Maps is a maps visualisation service provided by Google Ireland Limited that allows this Application to incorporate content of this kind on its pages.
Personal Data processed: Cookies and Usage Data.
Place of processing: Ireland – Privacy Policy. Privacy Shield participant.


This Application uses Cookies or other Identifiers to measure traffic and analyse User behavior with the goal of improving the Service.


The services contained in this section enable the Owner to monitor and analyze web traffic and can be used to keep track of User behavior.

Google Analytics (Google Ireland Limited)

Google Analytics is a web analysis service provided by Google Ireland Limited (“Google”). Google utilizes the Data collected to track and examine the use of this Application, to prepare reports on its activities and share them with other Google services.
Google may use the Data collected to contextualize and personalize the ads of its own advertising network.

Personal Data processed: Cookies and Usage Data.
Place of processing: Ireland – Privacy Policy. Privacy Shield participant.

How to provide or withdraw consent

Users can provide or withdraw consent to the use of Cookies and other Identifiers by setting their preferences within the cookie notice or by updating such preferences via the relevant consent-preferences widget accordingly, if available.

Additionally, Users can manage preferences regarding Identifiers directly from within their own device settings and prevent – for example – the storing of third-party Identifiers. It is also possible, via relevant browser or device features, to delete previously stored Identifiers, including those used to remember the User’s initial consent. Users can, for example, find information about how to manage Identifiers in the most commonly used browsers at the following addresses: Google ChromeMozilla FirefoxApple Safari and Microsoft Internet Explorer.

With regard to any Identifiers stored by third parties, Users can manage their preferences and withdraw their consent by clicking the related opt-out link (where provided), by using the means indicated in the third party’s privacy policy, or by contacting the third party.

Notwithstanding the above, Users are hereby informed that they may follow the instructions provided by YourOnlineChoices (EU), the Network Advertising Initiative (US) and the Digital Advertising Alliance (US), DAAC (Canada), DDAI (Japan) or other similar services. Such initiatives allow Users to select their tracking preferences for most of the advertising tools. The Owner thus recommends that Users make use of these resources in addition to the information provided in this document.

Owner and Data Controller

SEA S.R.L. – Via A. Mariani 44-46 – 48121 – Ravenna (RA) Italy

Owner contact email: info@seatrenching.it

Since the storing of third-party Cookies and other Identifiers through the services used within this Application cannot be technically controlled by the Owner, any specific references to Identifiers stored by third parties are to be considered indicative. In order to obtain complete information, the User is kindly requested to consult the privacy policies of the respective third-party services listed in this document.

Given the objective complexity surrounding technologies related to Cookies and other Identifiers, Users are encouraged to contact the Owner should they wish to receive any further information on the use of such Identifiers by this Application.

Definitions and legal references

Personal Data (or Data)

Any information that directly, indirectly, or in connection with other information — including a personal identification number — allows for the identification or identifiability of a natural person.

Usage Data

Information collected automatically through this Application (or third-party services employed in this Application), which can include: the IP addresses or domain names of the computers utilized by the Users who use this Application, the URI addresses (Uniform Resource Identifier), the time of the request, the method utilized to submit the request to the server, the size of the file received in response, the numerical code indicating the status of the server’s answer (successful outcome, error, etc.), the country of origin, the features of the browser and the operating system utilized by the User, the various time details per visit (e.g., the time spent on each page within the Application) and the details about the path followed within the Application with special reference to the sequence of pages visited, and other parameters about the device operating system and/or the User’s IT environment.


The individual using this Application who, unless otherwise specified, coincides with the Data Subject.

Data Subject

The natural person to whom the Personal Data refers.

Data Processor (or Data Supervisor)

The natural or legal person, public authority, agency or other body which processes Personal Data on behalf of the Controller, as described in this privacy policy.

Data Controller (or Owner)

The natural or legal person, public authority, agency or other body which, alone or jointly with others, determines the purposes and means of the processing of Personal Data, including the security measures concerning the operation and use of this Application. The Data Controller, unless otherwise specified, is the Owner of this Application.

This Application

The means by which the Personal Data of the User is collected and processed.


The service provided by this Application as described in the relative terms (if available) and on this site/application.

European Union (or EU)

Unless otherwise specified, all references made within this document to the European Union include all current member states to the European Union and the European Economic Area.


Cookies are Identifiers consisting of small sets of data stored in the User’s browser.


Any technology – including Cookies – that allows for the storing of information, or the accessing of already-stored information, on the User’s device.

Legal information

This privacy statement has been prepared based on provisions of multiple legislations, including Art. 13/14 of Regulation (EU) 2016/679 (General Data Protection Regulation).

This privacy policy relates solely to this Application, if not stated otherwise within this document.

Latest update: January 30, 2019
iubenda hosts this content and only collects the Personal Data strictly necessary for it to be provided.

Show the complete Privacy Policy