23. RADAR1 & RADAR2

This software contains two programs which resolve anticollision kinematics problems. This program was created for captain and officers uses; in fact graph anticollision is obliged as per London Convention and also for IMO (International Maritime Organization) regulations.

Anticollision graph is to be exhibited to the local harbour Master in all cases in which it is required when is to be proved that kinematics calculation were carried out during the previous sea passage of the vessel. In all cases of intense traffic or foggy weather this program is very helpful because in few seconds you can have 6 results; four of these are to change the course of the vessel and the other two to change only the speed whilst the ship's couse remain unchanged.

Among all dangerous targets observed to the radar monitor you to choose targets TRA TANTI BERSAGLI PERICOLOSI RILEVATI AL RADAR, SI DOVRA' SCEGLIERE QUELLO PIU' close to our vessel no more than 7 miles; plotting is to be effected with two running bearing (1 minute about ) and estabilishing the distance we need that other vessel is crossing our vessel. To effect this type of calculation, normally you need 15 minutes and if the observed target changes the course you have to repeat all calculations carried out before. In the mean time the Master remains without any help from the officer in charge and decides to manoeuvre the vessel without any calculation; Master in this case is helped only by using his experience.

Masters on board of Vessels provided with A.R.P.A.Radar use the system to plot targets direct in the Radar monitor with a coloured pencil; this methods is very dangerous because some target can remain hidden near the center of our monitor. These are the reasons in which London Convention obliges ship's Master to graph dangerous targets in allready prepared forms issued by " DEFENCE MAPPING AGENCY HIDROGRAPHIC/TOPOGRAPHIC CENTER" OF WASHINGTON.

"Safety first" is written up in the bridge in all vessels but it is also our "slogan".