Equipment-and-weather PDF

Preview

Summary

Assignment on bluefin's equipment and weather variables...

Description

1. Data collection methods 1.1. Data collection and task allocation The various components as listed in Table 1 were obtained from the Zig-Zag manoeuvring trial. These components required various collection methods which involved the utilization of different tools which will be discussed in the equipment section and visual observation of the crew and students. It should be noted that the initial data which includes the true wind speed and direction, water depth, sea state and wave direction, weather conditions, draft and water temperature are required to be obtained prior to the trial whereas the remaining data are obtained and calculated throughout the trial. Furthermore, the tasks were split amongst 8 people as listed in task allocation table in Table 2. It was noted that two people were tasked for the time recording to obtain a mean time for each trial component to provide a more accurate time reading. Besides that, a video recording of the trial was performed to obtain the various data required for the results which will be discussed upon in the results and discussion section. Table 1: Data collection method for Zig-Zag manoeuvring trial No.

Type of data

Collection Method

1

True wind speed and direction

2

Water Depth

Data obtained

Units

MR PB 200

True wind speed

kts

Radar

Display of wind speed and direction

Depth Sounder

Water depth below keel Total water depth

3

Sea State and wave direction

Visual observation

Sea state

Weather reports

Weather condition

Crew's observation

Sea state and weather condition

4

Draft

Visual observation

Assume marks at departure condition

5

Water Temperature

C Plot

Water temperature

6

Weather/surrounding conditions

Visual observation

Prediction on weather

7

Vessel Speed

8

Time Lapse

m

m

Weather reports C Plot

True vessel speed

JLN-203 Doppler log

Apparent vessel speed

Stopwatch

Initial turning time

kts

s

Time to check yaw Time for reach Time for complete cycle 9

Change of Heading

Gyroscope/GPS

Change in heading

°

10

Rudder angle

11

Heading Angle

Radar

Display

12

Distance

C Plot

Distance

nm

13

Engine Revolutions

Caterpillar engine monitoring system

Engine revolutions

RPM

14

Yaw rate

Calculate from headings

Yaw

°/s

15

Propeller pitch

Obtained from crew

Propeller pitch

°

Radar

Display

Rudder angle indicator receiver

Rudder angle

°

Heading angle

°

Gyroscope/GPS

Table 2: Task allocation Member Crew Adrian Harrison Blake Dane Harrison and Dylan Nicholas

Roles Operating vessel Video recording Record Speed (over ground and through water) Instructions for Crew Compass reading Time recording

Scribe

1.2. Equipment used The diagrams below depict the aforementioned apparatuses utilized at their specific steps throughout the ZigZag maneuver. Furthermore, it was noted that the S2016 Fish finder and the Simrad EK60 depth sounder in Figure 4 and Figure 5, was used as the depth sounder as listed in Table 1 to measure and display the water depth. It was noted that the fish finder also displayed components obtained from the doppler log as observed in Figure 3. Besides that, the C Plot in Figure 6 and Figure 7 displayed the various key components essential to trial as well as the track which was then utilized to measure the total distance of the track which will be discussed upon in the results and discussion. Moreover, the radar and gyroscope as observed in Figure 8 also acted as a display panel which listed various important information which includes the heading as obtained from the GPS in Figure 2, wind speed as obtained from the wind tracker in Figure 1 and the land area from the radar. Next, the autopilots as illustrated in Figure 9 and Figure 10 displayed the rudder angle. Lastly, the engine details which includes the engine speed, engine load, engine temperature were displayed in the Caterpillar engine monitoring system in Figure 11 while the pitch and RPM controls acted as a control and indicator for the RPM and pitch of the vessel.

Figure 1: Marine wind tracker

Figure 2: Marine GPS Navigator

Figure 3: JLN-203 Doppler Log

Figure 4: S2016 Fish Finder

Figure 5: Simrad EK60 Scientific echo sounder

Figure 6: C Plot

Figure 7: C Plot with Zig-Zag Manoeuvre track

Figure 8: Gyroscope and radar

Figure 9: Simrad AP70 Autopilot

Figure 10: Marine autopilot steering stand with gyro compass

Figure 11: Caterpillar engine monitoring system

Figure 12: Pitch and RPM controls with pitch indicator

2. Weather conditions 2.1....