Best Android Apps For Seafarers

Click, try and give comments for improvements to help our fellow seafarers.

1. SeaBook

2. ILO MLC 2006 Checklist

3. Maritime World Ports

4. Celestial Navigation

5. Collision Regulations

6. IALA Buoyage System

7. Cardinal Marks

8. Sun Surveyor 

9. Oil Calculation

10. Star Chart

How To Calculate Fresh Water Allowance

FWA = W / 40 x TPI (English System)

FWA = W / 4 x TPC (Metric System)

How To Calculate Dock Water Allowance

DWA = Fresh Water Allowance x (1025 – Density of Dock Water ) / 25

How To Calculate Parallel Sinkage

PS = w / TPI  (English System)
PS = w / TPC  (Metric System

w = weight loaded

How To Calculate Parallel Rise

PR = w / TPI  (English System)

PR = w / TPC (Metric System)

w = weight discharged

How To Calculate Squat

Squat / Sinkage

Open Waters:

S = Cb x  v² / 100 (Metric System)

S = Cb x v² / 30 (English System)

Shallow Waters:

Sinkage/Squat in Open  Waters x 2
 

S = (Cb x  v² / 100) x 2 (Metric System)

S = (Cb x v² / 30) x 2 (English System)

V = Ship’s Speed

Cb = Block Coefficient

How To Calculate Wheel Over Position

Example:

Present Course: 300 Degrees

Next Course: 330 Degrees

Course Difference: 30 Degrees

Your Desired Rudder Angle: 10 Degrees

Constant: 12

Solution:

WOP = ((30/10) x 12)/60 Minutes

          = 0.6 Nautical Miles