Extract text from SESAM point mass files (MASS)
To convert MASS SESAM files to another format, you need SESAM Wasim or other Data software.
To convert other file formats to the "Simulation Mass Model" file type, you need software like SESAM Wasim or a similar tool.
A .MASS file generally represents one of two entirely different formats: a legitimate engineering Point Mass Model or a personal file maliciously locked by the STOP/Djvu ransomware.
Legitimate .MASS files are used by SESAM, an advanced hydrodynamic and structural analysis suite developed by DNV. Specifically, the Wasim module uses these plain-text files to define the mass distribution of a vessel. The file contains critical variables like scaling factors (SCALEM) and specific X, Y, and Z coordinates for individual point masses.
Managing these files outside of the proprietary SESAM ecosystem can be frustrating. Because the format is highly specific to DNV's solver, viewing the 3D mass distribution requires the original software. Users often need to convert .MASS to CSV or TXT to validate coordinate data inside Microsoft Excel or standard Python plotting tools.
Alternatively, if your standard files (like JPG or DOCX) were suddenly appended with the .mass extension, your system was compromised by ransomware. This malware uses AES encryption to lock your data, turning the file into a proprietary, unbreakable container designed to extort money.
Standard online converters fail completely when processing ransomware files because the underlying data is heavily encrypted, not merely formatted differently. If it is a legitimate engineering model, our analysis will extract the text and coordinate data. If it is a ransomware file, we can safely inspect the file signatures without executing any malware, helping you confirm the encryption status.
Convert.Guru analyzes your MASS file, detects the exact format, and lets you read the text inside.
Users also converted DOCX, XXXXXX, DLMCACHE, DLMPARTIAL and PPM files.
If you want to convert MASS file to PPM, CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT or DB, you can use SESAM Wasim or similar software from the "Point Mass Distribution Data" category. In the File menu, look for Save As… or Export….
To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to MASS, try SESAM Wasim or another comparable tool in the "Point Mass Distribution Data" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our MASS converter.