Bollard Pull Calculator vs Midsuit Essy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bollard Pull Calculator
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The Bollard Pull Calculator is a handy tool for the maritime industry, providing precise calculations for towing forces. It is essential for ship design, port navigation, and towing operations. With its sophisticated algorithms and parameters, the calculator accurately determines bollard pull force, enabling maritime professionals to ensure safety and efficiency in vessel operations. Elevate your maritime ventures with the Bollard Pull Calculator's comprehensive features and capabilities A handy and simple tool to determine in a minimum time what is really needed as tug assistance, is the "Bollard Pull Calculator" which calculates in an approximate way the total required tug power for ships in various conditions of wind and current. This tool can be loaded as an app on the smart phone. The tool is based on the calculations and graphs as explained in chapter 5 of the book “Tug Use In Port”, written by Captain Henk Hensen FNI; The Nautical Institute, London, UK, with a 3rd edition published by The ABR Company, UK ( 2018). Moreover, formulas of linear and non-linear regressions obtained from academic and scientific studies have been digitalized and made suitable for mobile application. (BS 6349-1, OCIMF Mooring Equipment Guidelines (MEG4) 4th Edition 2018, SIGTO’s Prediction of Wind Loads on Large Liquefied Gas Carriers (2007), Post-Panamax Full Loaded Cond. Jare, Andersen I.M.V. (2003), Parameter identification of wind loads on ships, Werner BLENDERMANN [1993]) Assumptions Values & Coefficients for wind Calculations * Density of air in kg/m³ is assumed as 1,28 * The wind drag coefficients assumed the trim is zero in the fully loaded condition and 0.8 degrees in the ballast condition. * Wind drag coefficients (nonlinear diagrams) of VLCC (laden or in ballast)/Prismatic & Sypherical Gas Carrieers in determined by wind tunnel tests are taken from OCIMF MEG4. (The wind coefficients are based on data obtained from wind tunnel tests conducted at the University of Michigan in the 1960s.) The wind coefficient values are based on a comprehensive set of wind tunnel tests conducted on prismatic and spherical gas carriers for SIGTTO's Prediction of Wind Loads on Large Liquefied Gas Carriers (2007). Model tests covered the following sizes: Spherical 125,000, 135,000 and 150,000m³ / Prismatic 75,000,135,000 to 155,000, 210,000 and 260,000m³ * Wind drag coefficients (nonlinear diagrams) of "General cargo/Container" in determined by wind tunnel tests (Post-Panamax Full loaded cond.)are taken from Andersen I.M.V. 2003 * Wind drag coefficients (nonlinear diagrams) of "PCC/CRUISE LINER" are taken from W.Blendermann,1994/2014 * Wind drag coefficients (nonlinear diagrams) of "DRILL SHIP", "FISHING/CUTTER", "DIVER/RESEARCH/OFFSHORE SUPPLY VESSEL" Assumptions Values & Coefficients for Current Calculations * Density of sea water in kg/m³ is assumed as 1025 * The trim is assumed to be zero for all the current drag data and the effects of trim on current coefficients were not investigated. (However, the effect of trim will be most pronounced for the yaw current coefficients for ballasted tankers in shallow water.) * Current drag coefficients (nonlinear diagrams) of VLCC (laden or in ballast)/Prismatic & Sypherical Gas Carrieers are taken from OCIMF MEG4.The current coefficients are the result of Computational Fluid Dynamics (CFD) modelling, performed by Lloyd's Register on behalf of OCIMF, and have been extracted from a 2017 report on that work. (Full scale CFD modelling run on ships of 50,000,150,000 and 300,000 DWT.) IMPORTANT NOTE: Please note that data provided by the application are based on theoretical calculations. The calculations give an indication of the required bollard pull and should always be handled with care. This tool has been developed for informational use only and cannot be used as a direct reference when performing ship manoeuvres.
Midsuit Essy
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Essy is a comprehensive mobile application meticulously designed to streamline and simplify a wide array of workplace administrative tasks, ultimately boosting employee efficiency and productivity. This user-friendly mobile solution provides essential workplace tools, enabling employees to access vital information and perform administrative functions quickly and easily, eliminating the need for manual processes and visits to the HR department. All data is securely stored and protected within the robust MIDSUIT framework. Key Features for Enhanced Productivity: Digital Attendance: Experience fast and easy attendance tracking directly through the application. Benefit from automatic and accurately recorded data, eliminating physical queues and saving valuable time. Effortless Leave and Permission Requests: Submit leave requests and permission requests in a practical and fast manner. Enjoy secure data storage of all requests within the MIDSUIT environment. Payroll and Financial Information Access: Gain easy access to your payroll information and other important financial data. Rest assured with strong financial data protection provided by MIDSUIT. Conveniently submit loan requests and salary raise requests through the app. Centralized Employee Data Management: Access your employee data anytime, anywhere with ease. All information is organized and securely managed within the MIDSUIT system. Integrated Business Trip Management: Manage business trips seamlessly within the application. Benefit from the secure storage of all your travel data within MIDSUIT. Organized Overtime Management: Efficiently manage and track overtime hours within the app. Please note: ESSY is specifically designed as an Employee Self-Service (ESS) application to seamlessly integrate with the MIDSUIT ERP system by Avolut. All functionalities, from forms to workflows, are exclusively designed to operate within and require an existing MIDSUIT user account and access. For new users looking to access the benefits of Essy, please proceed to the Avolut website or reach out to Avolut customer service to begin the setup process. avolut.com cs@avolut.com
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Verdict
The clearest difference is iOS requirement: Bollard Pull Calculator at 13.0 against Midsuit Essy's 16.4. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Bollard Pull Calculator ships an update every 2 weeks, Midsuit Essy every 10 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.
| Parameter | Bollard Pull Calculator | Midsuit Essy |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 20 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | UZMAR BILISIM HIZMETLERI VE COZUM SISTEMLERI ANONIM SIRKETI | PT. Avolut Global Indonesia |
In-app purchases
Bollard Pull Calculator
No in-app purchases
Midsuit Essy
No in-app purchases
Questions
Is Bollard Pull Calculator free?
Is Midsuit Essy free?
Do Bollard Pull Calculator or Midsuit Essy have ads?
Which is updated more often, Bollard Pull Calculator or Midsuit Essy?
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