486 (5)

486 Załącznik 9

ExampU V: To find thc time al which thc midday tide falls lo 2.lm on 8th Novcmber at "Standard Port".

Estracl from Part I

/Midday-\

standard port Standard    stMBHEMHT reouired 2.1 V'*¹¹'"⁰ /

SECONDARY PORt —    DATĘ 8 Noy TIME ZONĘ -0700

STANDARD PORT

Scaional changc

DIFFERENCES Scasonal changc SECONOARY PORT Duration

TIME		MEIGłfT
MW	LW	HW	IW	RANGĘ
^1 0823	^2 1440	^J 3.2	^4 1.4	^5 1.8
Sundard Port		6 —	6 —
1	•*-	_	^,0# —
Sccondary Port		U —	II —
12 __	13 _	14 _	15 _
'* 0617

NOVEMBER

8 0132    1.5

0823    3.2

F 1440    1.4

2115    3.0

Notes: (i) Tłiis mcthod is only suitablc w hen thc duration of rise or fali is betwcen 5 and 7 hours and when there is no Shallow Watcr Correction (sce page xi).

(ii)    For Sccondary Poits. first obtain thc times and hcights of high and Iow waters as in examples I and II and

then proceed as bclow,

(iii)    The data used in this cxamplc do not refer to thc year of thcsc lablcs.

I    On diagram on page xvii. plot heights of H W and LW oceurring cither side of requtred event and join by sloping linę.

II    Enter HW limę and those for half-tidal cycle covering rcquired event

III    From required height. proceed vertically to sloping linę. thence horizontal to curve for duration. interpolating as necessary betwcen curves on diagram.

IV    Proceed yertically to limę scalę. Read off time.

Time 1200

XVI