7.1.3 
Checking the voyage plan 
7.1.3.1 Checking the route 
Functionality level 1 
Functionality level 2 
Function 
Input information 
Output information 
1. Check geographical 
conditions 
1.1.1 Record data and 
criteria 
• Orderly way point list and con 
necting route sections 
• Geographical information 
• Hydrographic information 
• Expected draught of ship 
• Ship dimensions 
• Representation of track calculated on the surrounding 
geographical situation 
• Selection of the relevant geographical information 
• Relevant hydrographic information 
• Selection of relevant ship data, eg maximum width, 
overall height 
1.1.2 Compare data and 
criteria 
« Result information from 1.1.1 
• Difference between geographical conditions expected 
(eg channel widths, water depths) and space require 
ment of ship 
1.1.3 Assess result of 
comparison 
• Result information from 1.1.2 
• Statement whether the geographical conditions ex 
pected are permissible 
• Representation of “critical areas”, stating cause 
1.1.4 Provide result of 
comparison 
• Result information from 1.1.3 
• Provision of critical areas determined and their causes, 
for revision of the original route data 
2. Check meteorological 
conditions 
2.1.1 Record data and 
criteria 
• Orderly way point list and con 
necting route sections 
• Expected passage and arrival 
times 
• Meteorological information 
• Ship’s load status and stability 
• Economic criteria (eg fuel con 
sumption) 
• Information on bad weather regions, expected wind 
and visibility conditions along the planned route at the 
planned future times 
• Limit values for acceptable weather conditions, taking 
into account load status/stability of ship 
• Limit values for weather conditions taking economic 
criteria into account 
2.1.2 Compare data and 
criteria 
• Result information from 2.1.1 
• “Difference” between meteorological conditions ex 
pected and acceptable conditions