M11: Currents And Tides

Question 1

Mean Lower Low Water

Answer 1

For regions with semi-diurnal or mixed semi-diurnal tides, the mean of the lower of the two low tides that occur each tidal day, determined over the period of water level observations

Question 2

Mean Higher High Water

Answer 2

For regions with semi-diurnal or mixed semi-diurnal tides, the mean of the higher of the two high tides that occur each tidal day, determined over the period of water level observations.

Question 3

semidiurnal

Answer 3

semidiurnal [ˌsemɪdaɪˈə:nl] a astr. įvykstantis du kartus per parą

Most places on the planet experience two high tides every 24 hours and 50 minutes as discussed above. This is called a semidiurnal tide.

Question 4

bathymetry

Answer 4

bathymetry [bəˈθɪmɪtrɪ] n batimetrija (vandens gylio matavimas)

Question 5

diurnal

Answer 5

diurnal [daɪˈə:nl] a
1 knyg. dienos, dieninis (priešpriešinant nakčiai)
2 astr. parõs

Question 6

estuary

Answer 6

estuary [ˈestʃuərɪ] n
1 estuarija, upės žiotys
2 jūr. limanas

Question 7

ebb

Ebb tide: Water going down towards low tide

Answer 7

ebb [eb] 
n 
1 atoslūgis; 
the tide is on the ebb potvynis slūgsta 
2 permaina į blogąją pusę; kritimas; 
to be at a low ebb (nu)kristi, (nu)smukti; būti sunkioje padėtyje 
v 
1 slūgti (atoslūgio metu) 
2 prk. slūgti, mažėti, silpnėti (t. p. ebb away)

Question 8

Flood Tide: Water coming up towards high tide

Answer 8

Flood Tide: Water coming up towards high tide

Question 9

Slack Water

Answer 9

Slack Water: Times when the water movement due to tidal effects are minimal. Note that because of the time it takes for bays and estuaries to drain out, slack water is not necessarily at high tide and low tide.

Question 10

kelp

Answer 10

kelp [kelp] n
1 bot. rudadumbliai, ypač laminarijos
2 tų dumblių pelenai, iš kurių išgaunamas jodas

Question 11

seaweed

Answer 11

seaweed [ˈsi:wi:d] n bot. jūros dumbliai

Question 12

well

Answer 12

well1 [wel]
Ä n
1 šulinys
5 naftos gręžinys (t. p. oil well)

Question 13

stranded wreck

Answer 13

stranded1 [ˈstrændɪd] a
1 užplaukęs ant seklumos
2 išmestas į krantą

Question 14

vortex

Answer 14

vortex [ˈvɔ:teks] n (pl -tices, vortexes)

1 sūkurys, verpetas (ir prk.); viesulas;

Question 15

It is reasonable to assume that leeway can cause …

Answer 15

It is reasonable to assume that leeway can cause a 5-10 degree directional change between the heading and the actual course.

Question 16

Wake

Answer 16

wake² n jūr. kilvateris; (laivo ir pan. sukeltas) srautas, bangavimas;
in the wake kilvateriu
◊ in smb’s/smth’s wake iš paskos; įkandin;
in the wake of po; dėl

Question 17

Sight down the vessels …

Answer 17

Sight down the vessels wake with the HBC to determine that bearing.

Question 18

the wind was off your starboard beam

Answer 18

the wind was off your starboard beam…

Question 19

rectilinear

Answer 19

rectilineal, rectilinear [ˌrektɪˈlɪnɪəl, ˌrektɪˈlɪnɪə] a spec. tiesus; tiesinis; tiesiaeigis (apie judėjimą)

Question 20

Rectilinear, rotary tide

Answer 20

Rectilinear, where they flow in one direction for half a tide and then reverse to flow in the opposite direction with a period of slack water at the turn of the tide or: Rotary, in which the stream changes direction from hour to hour, often without a period of slack water.