Marine Calculators
All necessary marine content for deck and engine officers

Margram
Maritime Social Network for any crewmember

Crewing Companies
Your Gateway to Seafaring Opportunities

Port Guide & Distances
Offline port info and distance calculator with route visualization

For Personal Use
Designed for individual seafarers and professionals, offers a comprehensive set of calculators to simplify complex maritime operations

For Corporate Use
Ideal for shipowners and fleet managers, the corporate version ensures efficient ship operations with essential tools and unmatched support

Offline Access
View port details and calculate routes without an internet connection

Global Port Database
Access essential data for ports worldwide, including facilities and regulations

Route Calculation
Instantly determine distances between ports and visualize routes on a digital map

Navigation Assistance
A valuable tool for voyage planning and fuel optimization

Store Anything, Anytime
Safely store documents, passwords, bank cards, and any other important files in one place

Full Control Your Datа
Your data stays on your device, with the option to create a backup on your personal Google Drive

Custom Organization
Create your own categories, assign colors, and easily manage your stored information

Fast & Secure Access
Quickly retrieve your data whenever you need it, with enhanced security and offline access

Linier Interpolation
Estimate values between two known points in a straight-line manner

Bilinear Interpolation
Perform more complex estimations using four known points for grid-based data

Ballast Calculator
Calculate the amount of ballast required in ship’s ballast tanks for stability and trim

Draft Survey Calculator
Accurately determine the weight of cargo loaded or discharged based on draft readings

Cargo Trimming Calculator
Optimize cargo distribution across two holds to achieve the required draft

Stowage Plan Calculator
Calculate total cargo quantity per hold, with additional loading and discharge notes. And other necessary calculators for Navigator

Oil Calculator
Calculate the quantity of fuel and oil in each tank on board

Unit Converter
Convert between essential maritime and engineering measurement units

Slip Calculator
Determine the slip ratio of the ship’s propeller to evaluate propulsion efficiency

ME Power Calculator
Accurately calculate the power output of the main engine

Distance and speed
The estimated time of arrival (ETA) based on distance and speed

Plan your voyage
The required speed to reach your destination on time

Track Every Contract
Add unlimited contracts with start and end dates — manage all your assignments in one app.

Visual Time Progress
See how much of your contract is complete and how much remains — clearly shown in a progress bar.

Custom Reminders
Set your own alert schedule and get notified before your contract ends — no surprises.

Notes & Details
Attach personal notes and key info to each contract — stay organized and ready at all times.

Global Connections
Stay connected with fellow seafarers across the globe — anytime, anywhere.

Real Conversations
Create question cards, get answers, and discuss life at sea with people who get it.

Share Anything
Post photos, documents, checklists, and moments from onboard life.

Thematic Spaces
Join topic-based sections tailored for different interests and needs — more added by community demand.