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sailed4seas talk 29 Mission impossible or piece of cake ?
Why ownship speed reduction is ineffective after we are in maneuvering speed? (suspect)
May be we forget the first rule “ Safe position is more effective than safe
May be we forget the first rule “ Safe position is more effective than safe
Mission impossible or piece of cake ?
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sailed4seas talk 29 Mission impossible or piece of cake ?
https://youtu.be/S-jtkMCbB9M
After 06 minutes 29 seconds exercise time lapsed:
Ownship speed is 9.3 knots which decreased from 11.0, 12.6, 14.5, 18.6 kts with engine output 15% from beginning and further reduce to 0% from 2.5 minutes. Ownship course had altered 1.3 degrees port side to 068.3degrees from 069.5, 067.9, 066.4, 063.8 degrees with rudder order “Starboard 10”and “starboard 5”over last minute. The situational awareness is: Two vessels in Orange Square are passed. (sighted) Speed reduces 1.7 knots over last 1.5 minute. (sighted) The distance creates from last 1.5 minutes decisive engine output reduction is about 2.12 cables. ( skill by calculation, 1.7/2 is average speed reduction, multiple 1.5 minutes run = 2.12 cable) This extra distance 2.12 cable keep ownship sail behind the collision point of other vessels. (statement)
Other ship arrive the collision point is still the same time as 1.5 minutes before. (statement)
Only thing changed in this scenery is ownship about to arrive collision point later. (sighted)
Ownship speed reduction is effective in beginning.(sighted)
Why ownship speed reduction is ineffective after we are in maneuvering speed? (suspect) May be we forget the first rule “ Safe position is more effective than safe speed”. (rule especially for slow speed vessel)
Beware the starboard side overtaking vessel. (sighted) Where is collision point with crossing vessel right now? (suspect) How to do from now on? (suspect) Decisive rudder cycling might be help? (suspect) To which side first hard over rudder angle should be used? (suspect)
http://sailed4seas.pixnet.net/blog/po...
https://youtu.be/S-jtkMCbB9M
After 06 minutes 29 seconds exercise time lapsed:
Ownship speed is 9.3 knots which decreased from 11.0, 12.6, 14.5, 18.6 kts with engine output 15% from beginning and further reduce to 0% from 2.5 minutes. Ownship course had altered 1.3 degrees port side to 068.3degrees from 069.5, 067.9, 066.4, 063.8 degrees with rudder order “Starboard 10”and “starboard 5”over last minute. The situational awareness is: Two vessels in Orange Square are passed. (sighted) Speed reduces 1.7 knots over last 1.5 minute. (sighted) The distance creates from last 1.5 minutes decisive engine output reduction is about 2.12 cables. ( skill by calculation, 1.7/2 is average speed reduction, multiple 1.5 minutes run = 2.12 cable) This extra distance 2.12 cable keep ownship sail behind the collision point of other vessels. (statement)
Other ship arrive the collision point is still the same time as 1.5 minutes before. (statement)
Only thing changed in this scenery is ownship about to arrive collision point later. (sighted)
Ownship speed reduction is effective in beginning.(sighted)
Why ownship speed reduction is ineffective after we are in maneuvering speed? (suspect) May be we forget the first rule “ Safe position is more effective than safe speed”. (rule especially for slow speed vessel)
Beware the starboard side overtaking vessel. (sighted) Where is collision point with crossing vessel right now? (suspect) How to do from now on? (suspect) Decisive rudder cycling might be help? (suspect) To which side first hard over rudder angle should be used? (suspect)
http://sailed4seas.pixnet.net/blog/po...