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  connecting ­
  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  requirement ­
  of  ship

1.1.3  Assess  result  of
comparison

•  Result  information  from  1.1.2

•  Statement  whether  the  geographical  conditions  expected ­
  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  connecting ­
  route  sections
•  Expected  passage  and  arrival
times
•  Meteorological  information
•  Ship’s  load  status  and  stability
•  Economic  criteria  (eg  fuel  consumption) ­


•  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  expected ­
  and  acceptable  conditions