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Top 10 Reasons Why You Should Trust Our Anchor Analysis

[Posted on January 6th, 2015 by Bill Stewart]

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Stewart Technology Associates are fully prepared using top technological analysis software to determine the best decision making and solutions for you, through our anchor analysis programs.

  1. Initially, you need analysis for any type deep sea project or industry, like oil and gas rigging. The best results will come from the inclusion of as many variables as possible for your analytical data. Not only are the anchor’s properties considered, but the chain or cable, and deep sea soil properties as well.
  2. Points of interest for the analysis will include heights, frequency, and velocity of waves, depth of the sea bottom in the anchoring area, currents, salinity, dimensions of the rig or vessel to be anchored, location of the rig where the anchoring will be set, and worst case scenario risks.
  3. Our Anchor Analysis provides suggestions for the materials intended for best use, to manufacture the appropriate anchor properties.
  4. Stewart Technology Associates have built a solid reputation in the field of the marine drilling industry and their clients rely on them with confidence, when they have detailed analysis on the line for the safety of their crew and projects.
  5. Stewart Technology Associates will never fail to exceed your expectations. In all areas of responsible handling of analysis data and critical information, the advice that our company conveys is reliable and sure as our solution proposals.
  6. Anchor analysis is a key consultancy point that world-class engineering specialists, scientists and professional consulting teams use when focusing on deep sea safety and high productivity.
  7. Anchors, single point moorings, multiple point moorings and all other deep sea securing equipment must meet the requirements for marine drilling safety specifications. We are continually expanding our knowledge in the field through our work with drilling contractors, major oil companies, various organizations, financial institutions, and government agencies all over the world.
  8. Through-out the past twenty-five years, Stewart Technology Associates not only performs the highest credible off shore analysis reports, but are trusted to find and recommend the best solutions.
  9. When we assist drilling operations at sea, we are focused on the productivity of the entire operation as a whole. Our anchor and mooring analysis process provides information for current and future sites, as well as preventing accidents and oil spills. During our analysis we can advise on preventative measures and containment of minor problems so they never become major events.
  10. We have developed long term consultation relationships with clients who initially contacted us after an accident or oil spill, to engage our clean up services. The longer we provide analysis assistance to offshore marine sites, the lower the chances of them ever having another event. From the first marine accident investigation to determine what went wrong, to structural, anchor, and mooring analysis and using marine training simulators, we develop the complete picture to provide solutions for future safety and effective operations.

Riser Analysis: an Integral Part of Sub-sea Analysis Services Provided

[Posted on December 26th, by Bill Stewart]

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Why Sub-sea Engineering Requires Exceptional Riser Analysis Technologies

Sub-sea engineering has extremely high financial stakes as it is still a relatively young discipline. Riser analysis presents a clearer understanding of principle parameters influencing riser behavior within the sub-sea riser design’s mode of influence. Finding clear procedures for the analysis of tricky problems like issues surrounding risers of multi-barrier anisotropic materials that are often subject to varying pressures, temperatures, and fluids; are key aspects of the expertise of Stewart Technology Associates.

Any conduit that is providing temporary extension for a sub-sea oil well for on-surface type drilling facilities, is called a drilling riser. These risers are divided into two categories.

  • Tieback drilling risers which are used with surface blowout preventers, (BOP), and deployed from spar or tension leg fixed platforms, which are very stable.
  • Marine drilling risers, flexible risers, used with sub-sea blowout preventers, (BOP), used by floating drilling vessels.

The confusing aspects of riser design require good qualitative explanations. The means of creating reliable analysis, both before and after running sophisticated FE riser analysis programs, can include using Excel spreadsheets for simplified riser analysis, 2H offshore riser systems analysis, fatigue analysis, and sub-sea integrity management programs, with riser and conductor engineering designs.

Our company, Stewart Technology Associates, can also assist with understanding counter-intuitive buoyant pipe mechanics and fluid-filled columns. Our marine engineering software products will provide on-bottom stability analysis and static pipe-lay analysis programs, and more. We use many software applications, many we have developed and others we market and support for our vendors, to ensure diversified and comprehensive reports among other sub-sea engineering analysis.

Risers are the most critical product of an offshore pipeline project. Needed to withstand extremely negative service conditions and dynamic loads, our dependable services at Stewart Technology Associates help deep-sea engineering crews who are required to reach reservoirs in increasingly deeper waters, subjecting risers to greater fatigue loads, and more challenging tolerances, environmental conditions, and mechanical properties.

Your team can count on our professional staff for answers to your difficult design and analysis questions. We have decades of experience in an extensive variety of marine industry and offshore services, from risk assessments to marine simulators and training. We use state-of-the-art software like Orcaflex for riser design and analysis, and we are also a U.S. agent for Orcina Software, including Orcalay for pipe-laying analysis, and Orcabend for bend-stiffener design and analysis.

Our proven dedication to excellence and safety since 1986 is a testament to our proficiency in providing proprietary software and designs for complex marine simulators for training emergency crews on lift-boats, semi-submersibles and jack-ups.  Also, Stewart Technology Associates has the ability to effectively help our U.S. marine clients with CE marking in conformance with the 98/37/EC Machinery Directive, as well as a wide-range of disciplines to assist major oil and engineering clients globally.

5 Reasons To Consider Cable Dynamics

[Posted on December 8th, by Bill Stewart]

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Cable dynamics may not be something you think of when you talk about going out on an oil rig. Any time you are on the water with an anchor, drilling equipment, or anything else, you have to look at the dynamics of a cable because there are various factors that need to be considered.

Depths of the Sea

There are going to be cables connected to your rig. They go up and down as the water goes up and down. When you are drilling, you have to consider the depth of the sea. It is very much like an anchor. An anchor is only going to be effective if it is able to reach the bottom. Otherwise, it is simply going to dangle from the boat and cause you to drift. The anchor is therefore not as effective as it could be and all because you were unprepared for the depth of water that you would be in. the same goes for the cables. Understanding depth is vital to the success of your project.


The physics of waves should be explored in depth when you’re going to be out on the water. You need to know when they are going to occur, where, the height of the waves, and more. All of these are going to play a role in the equipment you choose and the training you give your employees. Failure to recognize the importance of waves can result in problems on the water – and you could end up injuring someone or destroying a part of the rig.

Movement on the Rig

There’s going to be movement on the rig due to all sorts of factors – wind, weight of what’s on the surface, and even movement of employees. These are going to be factors when calculating the cable dynamics.

Overall Stability

Stability is critical and when you’re on a rig or even fishing, there are going to be cables or other lines in the water and then connected to your boat or rig. When working with steel catenary risers, they are responsible for the fluid transfer from one area to another. If the cable dynamics haven’t been explored to the fullest, the transfer could be broken simply because of one variable that was missed during the setup, such as bigger waves or deeper water.

Accident Prevention

It’s important to prevent accidents and when you are dealing with being on a rig that could be on the water for months at a time, you have to think about everything. The more you know about potential accidents on the water, the more you can prepare your employees for what could happen. Having analysis at your fingertips as to what you could experience can be invaluable when you are looking to train employees, purchase equipment, and stock the rig before leaving the shore.

How To Determine If Single Point Moorings Are Effective

[Posted on December 3rd, by Bill Stewart]

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Every project is different. If you are going to use single point moorings, you have to be confident that they are going to hold up within the environment of your platform. There are various problems that can go wrong in the water and you need to be sure you do sufficient analysis before making assumptions about what you will face.

The last thing you want is to face stronger waves than initially anticipated. Waves are powerful surges of water that can have a negative impact on the way that you keep an oil rig, boat, or any other vessel in place.

You cannot risk damaging your rig in any capacity. Single point moorings can be effective, but they are not always the most effective depending upon your setup and the location where you will be.

Orcaflex is a type of software that is capable of providing substantial amounts of analysis. This will allow you to choose the right number of points for a mooring. You may decide that a single point is sufficient enough or you may decide that multiple points or the use of an anchor is going to be the best solution.

Worst-case scenarios should always be factored in. Once you are out on the water, you are going to depend on boat moorings to keep you in place so that you don’t drift. You may also be using them so that you can get off of the boat or vessel for one reason or another.

When you leave the vessel, you need it to be where you left it. If there are higher waves, storms, or other issues, the single point moorings may not work, causing problems. It could be enough to damage the vessel or cause a break from the mooring, which means that your vessel could end up drifting through the ocean. Depending on the storm and the waves, it could be positioned miles away from you – and that can leave you stranded.

The best thing to do is focus on analysis of the moorings as well as the environment that they will be forced to perform to avoid any incidents. There are countless boating and marine accidents every year because people fail to do sufficient analysis. Regardless of whether you are in the gas and oil industry or any other industry, if you are going to be on the water, it is imperative that you bring the right supplies with you.

Knowledge is going to go a long way to protecting you, your staff, as well as all of your gear. New software can do a substantial amount of the analysis for you so that there is no question as to what you really need. The software can provide recommendations and give you calculations that you can rely on for all of your projects.

4 Reasons To Obtain Hydrodynamic Analysis Quickly After An Accident

[Posted on November 16th, by Bill Stewart]

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Investigating accidents that happen at sea is a top priority for maritime investigators as they use all types of resources, including hydrodynamic analysis, to determine the cause. Yet it is paramount to your company to obtain this analysis as soon as possible. Accident scenes can change quickly, especially when the accident is in maritime waters. Get the answers you need to prevent the accident from happening again and to hold the right people responsible. Here are 4 reasons to get this analysis quickly for maritime accidents.

1: Evidence Can Be Negatively Impacted

Investigating an accident at sea becomes twice as hard than evaluating one on land because the evidence can move along with the tides. The waves can change the location of the accident, making the investigation take longer because the investigators have to take into account the original scene of where the accident took place. The ocean water can also affect the integrity of the evidence the longer the evidence is in the water. Investigators can gather up what they need for their report quickly.

2: People Can Try To Cover Up Their Mistakes

While many people may feel bad about admitting that the accident was their fault, they will not be quick to admit to their wrongdoing if they can help it. They will try to blame everything, even the behavior of the water, for the mistake so they are not held liable. The hydrodynamic analysis can be performed to determine if the ocean water was really at fault, if workers made bad judgments, or if there was some type of equipment failure such as a line from single point moorings breaking away. If the accident was caused by human error, then the investigation can turn toward finding who to hold accountable so that the appropriate steps can be taken to remedy the situation.

3: Witness Accounts Can Change Quickly

With the ever changing ocean waters, witnesses can see things that may change very quickly. Also, witnesses will begin to talk to one another, as their testimony can change until everyone agrees to seeing the accident in the same way although it may not be an accurate depiction of events. Getting the right analysis in a timely manner can ensure that everything is investigated, even smallest issues that could be the actual cause and  can change the direction of the maritime accident investigation.

4: Allows Time To Gather Experts

When you get timely hydrodynamic analysis, you can get the determination for the cause of the accident before seeking out expert witnesses if the accident leads to litigation proceedings. You will have all the information you need in a timely fashion, as the experts can give their knowledge to further define the accident details in a manner that can be beneficial to your case.

5 Things To Know About Single Point Moorings

[Posted on November 9th, by Bill Stewart]

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Single point moorings can be an effective means of dealing with liquid cargo. The floating buoy can be an alternative to an anchor or used in conjunction with one. Depending upon the facility, it is capable of handling even the largest of vessels – though there are things to know about the moorings before you arrive on the spot.

Type of Anchor Point

There may be sub-oil and sub-sea pipelines that are connected to the single point moorings and if you are going to anchor near the moorings, you need to be aware of the situation ahead of time. Having the necessary anchor capacities will be a must when you approach and once you are out on the water, changing out an anchor is impossible. This means that it can work to your advantage to have anchor analysis done prior to leaving the shore.

Load Capacity

Single point moorings, often abbreviated as a SPM, are used most often when there is no dedicated facility for loading and unloading cargo. If you are in the gas and oil industry, you already know what kind of capacity you have and are in need of – and if you don’t, analysis can be done to find out. This will ensure the mooring is capable of meeting your needs. If it is not, then you would have to continue on where a dedicated facility is located to help you with the loading and unloading of petroleum or any other liquid cargo.

Dominant Environment

What kind of environment are you going into? A significant amount of analysis needs to be done to determine what your rig can handle based upon the waves, the general offshore operations, and everything else. Some environments will call for more than just the SPM based upon your own rig.

Fluid Transfer Paths

There are going to be fluid transfer paths to consider with a mooring. Understanding the diagram of the mooring prior to arrival is critical. This will help you to understand placement of the buoy, the pipeline manifold, as well as the underbuoy hoses. Once the fluid transfer path is clear, you can decide if it is enough for you. Smaller vessels may be able to choose between an anchor or mooring, but with larger rigs, such as a tanker vessel, it is likely that you will need both.

Full Capabilities

Ultimately, you need to know about the full capabilities of the mooring prior to arrival. Ideally, one has been custom built for you, but this is not always the case. As a result, it is imperative that you talk to someone who is knowledgeable about the SPM. Any analysis that can be done on the mooring in conjunction with your rig prior to going offshore is going to make great improvements and allow you to prepare your staff for what they will be up against.

5 Reasons To Spend The Money On Anchor Analysis

[Posted on November 3rd, by Bill Stewart]

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Whether you’re in the gas and oil industry or any other industry that requires you to go out on the water, it’s critical to spend the money on anchor analysis. Even if you have engineers on staff that know how to perform the analysis, it can be advantageous to have a third party take a look and ensure that you have thought of everything.

Understand Water Patterns

There are going to be different water patterns based upon location as well as how far out from shore you go. The ocean waves need to be fully understood to prepare your rig and ensure that you have anchors heavy and long enough to handle all that you may encounter while out on the water. Insufficient anchors when it comes to big waves could result in drifting, and that can damage equipment amongst other things.

Explore Depth Issues

The depth is going to be another issue to be concerned with. An anchor is only effective if it reaches the bottom of the ocean, otherwise you can find yourself floating at sea, at the mercy of the waves. There has been a lot of deep sea exploration and using this information in conjunction with computerized analysis can tell you about depth issues in certain areas of the world.

Identify Risks

The risks of being on the water need to be fully dealt with. Stewart Technology Associates uses advanced programming with Orcaflex software. This technology can provide a “worst case scenario” for you to use to help you better identify the risks so you know what could potentially occur. Your engineers on staff may not have access to such advanced software, which means they cannot provide the same level of analysis.

Obtain the Necessary Equipment

Before you can go out on the water, you need to know what’s needed on your rig. This is not the easiest thing to do because once out on the water, getting additional equipment may prove to be difficult if not completely impossible. With anchor analysis, you can learn more about the water and what’s needed of your rig to make the necessary acquisitions prior to going offshore.

Train the Staff

All sorts of analysis, including that of seakeeping analysis, can provide details as to what the water is going to do while offshore. This information can be used to prepare the staff and train them adequately. There may be situations that occur while on the water, lowering an anchor or something else that could prove catastrophic if the employees don’t know what to do. A few pages of analysis can be just what’s needed to keep everyone in the know and provide sufficient levels of training to anyone who will be out on the water so they are capable of expecting the unexpected – and will know what to do when the unexpected actually occurs.

Why A Mooring Analysis Is Amongst The Top Analysis Required

[Posted on October 23rd by Bill Stewart]

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A mooring analysis is common throughout marine and offshore industries. It’s not always easy to create a floating dock or keep a vessel from moving and it’s important to have as much information as you can about the subject. This is one of the most popular and most necessary forms of analysis as it applies to so many different projects.

By understanding a mooring, you understand the need for it to be able to withstand the water pressure that it is in and be strong enough for whatever is being tied to it. Some moorings are able to support one thing while others don’t. Different types that exist include:

–           CALMs

–           SALMs

–           Turrets

–           Towers

–           Submerged buoys

–           Harbor moorings

What’s used for a Jet Ski is going to be very different from what’s used for a dolphin encounter or a cruise ship. A significant amount of mooring analysis is required in order to look at the details. The depth of the water, the waves, the salinity, and various other factors are taken into consideration.

Stewart Technology Associates uses state-of-the-art marine software in the form of OrcaFlex. It allows for a comprehensive solution when organizing data and being able to establish worst-case scenarios. Once the numbers come out of the software, it is then analyzed even further and recommendations can be made in terms of providing input on what a mooring needs to consist of.

It’s important to realize that anchor analysis is very different as a mooring is a permanent or semi-permanent structure that is in place whereas the anchor is on the vessel and then thrown down as a way of providing a temporary pause to movement.

Understanding waves and other details become critical. A passing ship can have an effect on the mooring because of the waves that are generated. All of these become factors that must be considered to avoid accidents.

When you are going out on the water, your goal is to minimize risk. You don’t want to encounter any fatalities or lose any business as a result of an accident. With mooring analysis, you are able to determine what kind of spread or single point mooring is needed based upon your individual project. You cannot rely on analysis done for anyone else as you have different things going on and they must be taken into consideration to yield the most positive results for you.

Analysis doesn’t have to be done by you. In fact, it should not be done by you as it’s critical to have a third party that will be impartial to the outcome of the analysis. A third party will not hold anything back and provide you with the details that you need to understand the type of mooring you need to locate, use, and/or build. When these details are at your fingertips, it promises better results when you are on the water.

What A Marine Accident Investigation Can Tell You

[Posted on October 19th by Bill Stewart]

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Accidents can happen out on the open waters and that’s when a marine accident investigation is needed. It can tell you what happened as a way of learning from your mistake and avoiding something of a similar nature in the future. There is the need to find out the legal, environmental, and logistical effects of an accident.

While mooring analysis and other types of analyses can be done to help you determine what the water and other conditions are going to be like, accidents still happen. Despite how much you prepare, something eventually goes wrong and it may not be obvious who or what is responsible.

Some of the reasons for accidents can include:

–           Human error

–           Natural disasters

–           Faulty equipment

When there is an expert witness, it’s possible to get evidence examined and that can help to work through an accident. A marine accident investigation can help to identify the responsible party or parties, solve legalities as to who needs to be called out on the accident, and more. There are various technical issues that can occur and if there have been mooring problems or something else, you need to know about it as a way of preventing such in the future.

Sometimes, the unexpected happens. There are large ocean waves that are unpredictable and particularly in the Pacific and Arctic Oceans, they have been so large that there is no sea vessel that could be safe from them. Nature can be unpredictable and it requires a marine expert to determine if that might have been the cause of an accident.

Stewart Technology Associates offers marine accident investigation services and they become an impartial help in determining what happened. They may be hired by one party of the accident, though it is their responsibility to weigh all of the evidence fairly. Everything will be examined and after they have gone through all of the details, a determination will be made as to why the accident occurred and what can be done in the future to prevent such a thing.

Ultimately, the investigation is going to tell you what you need to know in order to move past the accident and learn from it. If legal action is required or has been taken against you, the details will be provided so you know what you need to defend or who you need to go after. Some accidents are more severe than others and can lead to fatalities and cost thousands or even millions of dollars. These are the accidents where a thorough investigation is a must to ensure that such a thing never happens again.

Your company’s name is on the line every time there is an accident. When you can give workers, investors, and the media peace of mind as to what happened and take actions to prevent it in the future, it will allow you to get the spotlight off of you.

Three Reasons For Hydrodynamic Analysis

[Posted on October 7th by Bill Stewart]

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There are many reasons for hydrodynamic analysis. Generally speaking, it helps to provide details about how the water is going to react. Whether you’re boating or going out with an offshore oil rig, you need to understand the behavior of the water as a way of preparing for everything that you could potentially encounter.


Once you are on the water, you cannot simply obtain more supplies. What is on the boat or the rig is what you will have to use. This includes anchors, drop lines, and anything else. If you don’t know what the water is going to do in terms of temperature, salinity, depth, waves, and more, it could result in potentially disastrous accidents.

You may need chains of various lengths, risers that are capable of going into deeper waters, and more. It’s best to have these on the rig so you don’t have to cut a project short because of not having the right supplies.


Many common accidents aboard a ship could have been avoided through hydrodynamic analysis. Everything from anchoring problems to men overboard accidents have occurred and that’s because everyone who was out on the ship were making assumptions about the behavior of the water instead of going with actual numbers.

Stewart Technology Associates can provide the analysis and even conduct a marine accident investigation. They have up-to-date technology that allows for numbers to be crunched and assumptions to be made. It also helps to establish worst-case scenarios in order to be prepared.


It’s important to be able to prep your team that’s going to be on the water. They need to know that swells could reach a certain height and that there may be instances where they need to use a different type of anchor or other piece of equipment as a result of the water that they are in. By having more information at your fingertips, you can go through various training modules and help your team to expect the unexpected.

When you know more about how waves work and everyone around you does, too, it works to your advantage. You cannot trust that everything will work itself out. There have been significant waves reported throughout the Pacific and Arctic Oceans. When your projects take you into unchartered waters, you cannot rely on what others have reported – the research has to be done on an as-needed basis.

The hydrodynamic analysis does not take long, so there’s no excuse for skipping it. You don’t even have to rely on your own team to do the analysis because a third party can do it and provide you with more advanced technology to ensure the numbers are accurate. Recommendations can come from the analysis as well, allowing you to get a second opinion on the supplies needed, the best way to avoid marine accidents, and more.

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