Question
51
Multiple echoes biasanya terjadi ketika...
Multiple echoes usually occur when...
Options
a
Echo memantul bolak-balik antara kapal sendiri dan target kuat
Echoes bounce back and forth between own ship and a strong target
b
Hujan lebat menutupi layar radar
Heavy rain covers the radar screen
c
Gyrocompass kehilangan heading
The gyrocompass loses heading
d
VRM tidak diaktifkan
The VRM is not activated
Grade
Easy
Last Update
06 Jul 2026 10:34
By Yan
Question
52
Indirect echoes dapat muncul karena...
Indirect echoes may appear because...
Options
a
Pantulan radar mencapai target melalui objek pemantul lain
Radar reflections reach the target through another reflecting object
b
Antena berputar terlalu lambat
The antenna rotates too slowly
c
Pulsa radar terlalu pendek
The radar pulse is too short
d
Log speed tidak masuk ke ARPA
Log speed is not input to ARPA
Grade
Medium
Last Update
06 Jul 2026 10:36
By Yan
Question
53
Shadow sector pada radar disebabkan oleh...
A shadow sector on radar is caused by...
Options
a
Terhalangnya pancaran radar oleh struktur kapal
Radar transmission being blocked by the ship’s structure
b
Kekuatan pemancar radar terlalu besar
Excessive transmitter power
c
Sinyal GPS terputus
Loss of GPS signal
d
Putaran antena terlalu cepat
Excessive antenna rotation speed
Grade
Medium
Last Update
06 Jul 2026 10:37
By Yan
Question
54
Second trace echoes muncul ketika...
Second trace echoes appear when...
Options
a
Echo dari pulsa sebelumnya ditampilkan pada putaran berikutnya
An echo from a previous pulse is displayed on the next sweep
b
Target berada tepat di haluan kapal sendiri
A target is directly ahead of own ship
c
Rain clutter terlalu besar
Rain clutter is too strong
d
Heading marker tidak stabil
The heading marker is unstable
Grade
Medium
Last Update
06 Jul 2026 10:37
By Yan
Question
55
Main bang pada layar radar adalah...
Main bang on the radar screen is...
Options
a
Gangguan terang di pusat layar saat pulsa dipancarkan
A bright disturbance at the center of the screen when the pulse is transmitted
b
Echo dari target kecil di jarak jauh
An echo from a small target at long range
c
Jejak target yang bergerak cepat
The trail of a fast-moving target
d
Alarm dari guard zone
An alarm from the guard zone
Grade
Hard
Last Update
06 Jul 2026 13:15
By Yan
Question
56
Sebelum radar digunakan penuh, magnetron umumnya memerlukan...
Before radar is fully used, the magnetron generally requires...
Options
a
Waktu pemanasan agar bekerja stabil
A warm-up period to operate stably
b
Kalibrasi terhadap kompas magnet
Calibration against the magnetic compass
c
Sinkronisasi dengan echo sounder
Synchronization with the echo sounder
d
Pendinginan total selama satu jam
Complete cooling for one hour
e
f
g
h
i
Grade
Easy
Last Update
06 Jul 2026 13:21
By Yan
Question
57
Input kecepatan kapal untuk ARPA umumnya berasal dari...
The ship’s speed input for ARPA generally comes from...
Options
a
Speed log atau sensor kecepatan yang terhubung
A speed log or connected speed sensor
b
Barometer digital
A digital barometer
c
Auto pilot
The autopilot
d
AIS target terdekat
The nearest AIS target
Grade
Easy
Last Update
06 Jul 2026 13:23
By Yan
Question
58
Bila input heading mengalami gangguan, akibat yang mungkin terlihat adalah...
If the heading input is disturbed, a possible effect is...
Options
a
Baringan sejati dan vektor target menjadi tidak andal
True bearings and target vectors become unreliable
b
Jarak target otomatis bertambah
Target range increases automatically
c
Sea clutter hilang seluruhnya
Sea clutter disappears completely
d
Pulsa radar berubah menjadi kontinu
Radar pulses become continuous
Grade
Medium
Last Update
06 Jul 2026 13:26
By Yan
Question
59
Bila input kecepatan kapal sendiri tidak akurat, maka...
If own ship’s speed input is inaccurate, then...
Options
a
Perhitungan true vector, CPA, dan TCPA dapat menjadi salah
The calculation of true vectors, CPA, and TCPA may be incorrect
b
Warna echo target berubah
The color of target echoes changes
c
Antena berhenti berputar
The antenna stops rotating
d
Range rings tidak tampil
The range rings do not appear
Grade
Medium
Last Update
06 Jul 2026 13:26
By Yan
Question
60
Sesuai prinsip pengamatan tabrakan, bila radar terpasang dan beroperasi maka perwira jaga harus...
In accordance with collision observation principles, if radar is fitted and operating, the officer of the watch must...
Options
a
Menggunakannya secara benar termasuk plotting atau pengamatan sistematis
Use it properly, including plotting or systematic observation
b
Mengandalkannya tanpa perlu pengamatan visual
Rely on it without visual observation
c
Menyalakannya hanya saat target terlihat
Turn it on only when a target is sighted
d
Mematikannya di perairan padat
Switch it off in congested waters
Grade
Medium
Last Update
06 Jul 2026 13:31
By Yan