s1 as10k 1 - dgrm
TRANSCRIPT
Sesimbra
Portugal
(PRT)
3
0
9
0
80
7
0
5
0
20
10
0
0
1
0
2
0
30
70
8
0
25
17
14
7
-
1
7
13
16
5
50°
22°
21°
S
A
T
3
s
e
g
2
2
E
u
r
a
f
r
i
c
a
s
e
g
E
1
(
O
O
S
)
B
U
G
I
O
S
E
A
-
M
E
-
W
E
3
s
e
g
9
S
E
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-M
E
-W
E
3
s
e
g
8
.1
1
E
I
G
s
e
g
2
.
2
Arrabida -
Marine Protection Area
C
a
b
l
e
P
r
o
t
e
c
t
i
o
n
Z
o
n
e
0
1
2
1
1
2
1
1122
B
M
H
S
E
S
I
M
B
R
A
C
A
B
L
E
A
L
L
O
W
A
N
C
E
A
C
A
C
A
C
A
C
A
C
A
C
AC
AC
A
C
D
T
E
N
D
O
F
D
U
C
T
ST
AR
T R
NB
(S
R)
EN
D R
NB
(S
R)
ST
AR
T R
NB
(S
R)
EN
D R
NB
(S
R)
ST
AR
T R
NB
(S
R)
ST
AR
T C
BC
(H
G)
CX
O
OS
S
AT
S
EG
A
WD
1
0
EN
D C
BC
(H
G)
AP
E
ND
ST
AR
T C
BC
(H
G)
WD
12
PL
DN
C
BC
(H
G)
SC
0.2%
PL
UP
E
ND
C
BC
(H
G)
ST
AR
T P
LB
C
BC
(H
G)
EN
D C
BC
(H
G)
38° 2
6'N
38° 2
7'N
009° 06'W
1605000E
1606000E
1607000E
5184
000N
5185
000N
5186
000N
Sesimbra
Portugal
(PRT)
cs
r
r
csr
cs
cs
r
cs
cs
fs
r
cs
fs
r
r
fs
fs
cs
r
S1-A-GS01
S1-A-GS02
S
1
-
G
-
G
C
0
1
1
/
n
m
h
1
/
n
m
h
1
/
n
m
h
S1-A-S38
0.7x0.4x0.2
S1-A-S39
1.9x0.9x0.2
1
/
n
m
h
1
/
n
m
h
1
/
n
m
h
1
/
n
m
h
fs
Beach ductas-found bycable detector
Potentially IS Sagresas-found by SSS
<0.5 m medium SANDover subcropping ROCKwith isolated boulders
SAND/GRAVEL <1 m very soft
CLAY oversubcropping
ROCK
ROCK
ROCK
IS Sagres
Possible unknown cableor cable debris
Possible unknowncable or cabledebris
Possible unknowncable or cable debris
Possible unknown cableor cable debris
Possible unknown cableor cable debris
Possible unknown cableor cable debris
Potentially IS Sagresas-found by SSS
Potentially IS EIG seg 2.2as-found by SSS
IS Sagresas-found
by SSS
IS Sagresas-found by
SSS
Potentially IS SEA-ME-WE 3seg 9 as-found by SSS
IS SEA-ME-WE 3 seg 9as-found by SSS
IS SEA-ME-WE 3 seg 9as-found by SSS
IS SEA-ME-WE 3 seg 9as-found by SSS
IS SEA-ME-WE 3seg 8.11 as-foundby SSS
IS SEA-ME-WE 3 seg 8.11as-found by SSS
Medium tocoarse SAND
<1 m medium to coarseSAND over subcropping
HARDGROUND
<1 m medium SANDover subcropping
HARDGROUND withisolated boulders
Veneer of GRAVEL/COBBLES andnumerous boulder (boulder field)over outcropping ROCK
Outcropping ROCK
Veneer of medium SANDover outcropping ROCKwith isolated boulders
<0.5 m medium SAND over subcroppingROCK with megaripples, coast parallelsediment structures (height: 0.4 m) andisolated boulders
Interpretation based onMBES backscatter
Very softCLAY overSAND/GRAVEL
For detailed information on
contacts please refer to chart
EQU_S1_NU-001_0.5k,
EQU_S1_NU-001_5k
and MDB files.
S
1
-
S
E
-
B
P
0
1
S
1
-
S
E
-
B
P
0
2
S
1
-
S
E
-
B
P
0
3
S
1
-
S
E
-
B
P
0
4
S1-A
-G
S03
S
A
T
3
s
e
g
2
2
E
u
r
a
f
r
i
c
a
s
e
g
E
1
(
O
O
S
)
B
U
G
I
O
S
E
A
-
M
E
-
W
E
3
s
e
g
9
S
E
A
-M
E
-W
E
3
s
e
g
8
.1
1
E
I
G
s
e
g
2
.
2
Arrabida -
Marine Protection Area
C
a
b
l
e
P
r
o
t
e
c
t
i
o
n
Z
o
n
e
0
1
2
1
1
2
1
1122
B
M
H
S
E
S
I
M
B
R
A
C
A
B
L
E
A
L
L
O
W
A
N
C
E
A
C
A
C
A
C
A
C
A
C
A
C
AC
AC
A
C
D
T
E
N
D
O
F
D
U
C
T
ST
AR
T R
NB
(S
R)
EN
D R
NB
(S
R)
ST
AR
T R
NB
(S
R)
EN
D R
NB
(S
R)
ST
AR
T R
NB
(S
R)
ST
AR
T C
BC
(H
G)
CX
O
OS
S
AT
S
EG
A
WD
10
EN
D C
BC
(H
G)
AP
E
ND
ST
AR
T C
BC
(H
G)
WD
1
2
PL
DN
C
BC
(H
G)
SC
0.2%
PL
UP
E
ND
C
BC
(H
G)
ST
AR
T P
LB
C
BC
(H
G)
EN
D C
BC
(H
G)
38° 2
6'N
38° 2
7'N
009° 06'W
1605000E
1606000E
1607000E
5184
000N
5185
000N
5186
000N
30
100
9
0
8
0
70
5
0
2
0
2
0
3
0
7
0
8
0
90
1
0
0
99
94
97
2
5
9496
98
1
0
2
5
0
°
2
2
°
2
1
°
S
A
T
3
s
e
g
2
2
SA
T seg A
E
u
r
a
f
r
i
c
a
s
e
g
E
2
(
O
O
S
)
U
k
-
P
o
r
t
u
g
a
l
S
E
A
-M
E
-W
E
3
se
g
9
S
E
A
-
M
E
-
W
E
3
s
e
g
8
.
1
1
EIG
seg 2
.2
S
A
T
s
e
g
A
A
r
r
a
b
i
d
a
-
M
a
r
i
n
e
P
r
o
t
e
c
t
i
o
n
A
r
e
a
C
a
b
le
P
ro
te
ctio
n
Z
o
n
e
1
2
3
1120
1
1
2
1
A
C
A
C
A
C
AC
P
L
U
P
E
N
D
C
B
C
(
H
G
)
S
T
A
R
T
P
L
B
C
B
C
(
H
G
)
E
N
D
C
B
C
(
H
G
)
PL
DN
(E
ND
P
LB
)
CX
O
OS
S
AT
S
EG
A
CX
O
OS
C
AM
1
TR
M
DA
17
40
/S
AL
17
40
38° 25'N
38° 26'N
009° 06'W
1606000E
1607000E5182000N
5183000N
5184000N
r
fs
rfs
r
r
cs
fs
cs
fs
csS
1
-
A
-
G
S
0
1
S1-G-GC01
S
1
-
A
-
S
3
9
1
.
9
x
0
.
9
x
0
.
2
S1-G-GC06
S1-G-GC06A
fs
SAND/GRAVEL
SAND/GRAVEL
Very softCLAY overSAND/GRAVEL
<1 m very softCLAY oversubcroppingROCKROCK
ROCKIS SagresIS Sagres
as-found by
SSS
<1 m medium to coarse
SAND over subcropping
HARDGROUND
Interpretation based on
MBES backscatter
Very soft
CLAY over
SAND/GRAVEL
S
A
T
3
s
e
g
2
2
SA
T seg A
E
u
r
a
f
r
i
c
a
s
e
g
E
2
(
O
O
S
)
U
k
-
P
o
r
t
u
g
a
l
S
E
A
-M
E
-W
E
3
se
g
9
S
E
A
-
M
E
-
W
E
3
s
e
g
8
.
1
1
EIG
seg 2
.2
S
A
T
s
e
g
A
A
r
r
a
b
i
d
a
-
M
a
r
i
n
e
P
r
o
t
e
c
t
i
o
n
A
r
e
a
C
a
b
le
P
ro
te
ctio
n
Z
o
n
e
1
2
3
1120
1
1
2
1
A
C
A
C
A
C
AC
P
L
U
P
E
N
D
C
B
C
(
H
G
)
S
T
A
R
T
P
L
B
C
B
C
(
H
G
)
E
N
D
C
B
C
(
H
G
)
PL
DN
(E
ND
P
LB
)
CX
O
OS
S
AT
S
EG
A
CX
O
OS
C
AM
1
TR
M
DA
17
40
/S
AL
17
40
38° 25'N
38° 26'N
009° 06'W
1606000E
1607000E5182000N
5183000N
5184000N
1
0
0
9
0
100
104
103
102
99
9
4
9
7
98
102
1
0
3
104
105
E
u
r
a
f
r
i
c
a
s
e
g
E
2
(
O
O
S
)
E
IG
seg 2.2
U
k
-
P
o
r
t
u
g
a
l
C
A
M
1
SE
A-M
E-W
E 3
seg 9
S
E
A
-
M
E
-
W
E
3
s
e
g
8
.
1
1
S
A
T
s
e
g
A
A
r
r
a
b
i
d
a
-
M
a
r
i
n
e
P
r
o
t
e
c
t
i
o
n
A
r
e
a
Cable
Pro
tection
Zone
3
1119
1
1
2
0
A
C
AC
C
X
O
O
S
C
A
M
1
T
R
M
D
A
1
7
4
0
/S
A
L
1
7
4
0
38° 25'N
009° 06'W
1605000E
1606000E
1607000E
5182000N
5183000N
cs
cs
cs
cs
S
1
-G
-G
C
0
6
S
1
-G
-G
C
0
6
A
SAND/GRAVEL
SAND/
GRAVEL
Very Loose to mediumdense SAND
Interpretation based onMBES backscatter
E
u
r
a
f
r
i
c
a
s
e
g
E
2
(
O
O
S
)
E
IG
seg 2.2
U
k
-
P
o
r
t
u
g
a
l
C
A
M
1
SE
A-M
E-W
E 3
seg 9
S
E
A
-
M
E
-
W
E
3
s
e
g
8
.
1
1
S
A
T
s
e
g
A
A
r
r
a
b
i
d
a
-
M
a
r
i
n
e
P
r
o
t
e
c
t
i
o
n
A
r
e
a
Cable
Pro
tection
Zone
3
1119
1
1
2
0
A
C
AC
C
X
O
O
S
C
A
M
1
T
R
M
D
A
1
7
4
0
/S
A
L
1
7
4
0
38° 25'N
009° 06'W
1605000E
1606000E
1607000E
5182000N
5183000N
1
0
0
107
1
0
6
1
0
5
104
1
0
3
1
0
2
102
1
0
3
1
0
4
105
106
10
7
108
E
IG
s
e
g
2
.2
U
k
-
P
o
r
t
u
g
a
l
C
A
M
1
SEA-ME-WE 3 seg 9
S
E
A
-
M
E
-
W
E
3
s
e
g
8
.
1
1
Cable
Pro
tectio
n
Zone
3
4
1118
1119
AC
AC
ST
AR
T C
BC
(H
G)
EN
D
C
BC
(H
G
)38° 24'N
38° 25'N
009° 06'W
1605000E
1606000E
5181000N
5182000N
cs
cs
S1-G-CP01
S1-G-CP01A
Data gap due tobuoy location
Very Loose to mediumdense SAND
<1 m very loose to medium dense siltySAND over subcropping HARDGROUND(very dense to cemented SAND)
Interpretation based on
MBES backscatter
E
IG
s
e
g
2
.2
U
k
-
P
o
r
t
u
g
a
l
C
A
M
1
SEA-ME-WE 3 seg 9
S
E
A
-
M
E
-
W
E
3
s
e
g
8
.
1
1
Cable
Pro
tectio
n
Zone
3
4
1118
1119
AC
AC
ST
AR
T C
BC
(H
G)
EN
D
C
BC
(H
G
)38° 24'N
38° 25'N
009° 06'W
1605000E
1606000E
5181000N
5182000N
A
IRA: 1
PL
ST: I-IV
PBD: 1.5m
A
IRA: 1
PL
ST: I-III
PBD: 1.5m
A
IRA: 1
PL
ST: I-III
PBD: 1.5m
B
IRA: 2
PL
ST: I-VI
PBD: 0.5-1.0m
TR MDA/SAL
@ KP 2.697
A
IRA: 1
PL
ST: I-IV
PBD: 1.5m
A
IRA: 1
PL
ST: I-III
PBD: 1.5m
A
IRA: 1
PL
ST: I-IV
PBD: 1.5m
PLB
TR MDA/SAL
@ KP 2.697
F
IRA: 4
SL
ST: III-VII
PBD: 0m
Slopes
>12 deg
A
IRA: 1
PLB
ST: I-IV
PBD: 1.0-1.5m
A
IRA: 1
PL
ST: I-IV
PBD:
1.5m
B
IRA: 2
PL
ST: III-VII
PBD:0.5-1.0m
A
IRA: 1
PLB
ST: I-IV
PBD:1.0-1.5m
A
IRA: 1
PL
ST: I-IV
PBD: 1.5m
PLBSL
B
IRA: 2
PL
ST: III-VII
PBD: 0.5-1.0m
-
IRA: -
-
ST: -
PBD: -
SL
B
IRA: 2
DB
ST: III-VII
PBD: 0.5-1.0m
DBDBDB
F
IRA: 4
SL
ST: III-VII
PBD: 0m
Slopes
>12 deg
A
IRA: 1
PLB
ST: I-IV
PBD: 1.0-1.5m
DB
Cable to be routed
through existing
tunnel to BMH
B
IRA: 2
PL
ST: III-VII
PBD:0.5-1.0m
DB
Very loose to medium dense siltySAND overlying subcropping
HARDGROUND (very dense tocemented SAND)
Very loose to mediumdense SAND
PotentiallyHARDGROUND /weathered ROCK
PotentiallyHARDGROUND /weathered ROCK
Potentially HARDGROUND
S1-G
-CP0
1A (d
ol: 7
3.2)
S1-G
-CP0
1 (d
ol: 7
0.1)
0°
CX
O
OS
C
AM
1
0°
Very soft CLAY overSAND/GRAVEL
Very loose to mediumdense SAND
PotentiallyHARDGROUND /weathered ROCK
Potentially HARDGROUND
S1
-G
-G
C0
6A
(d
ol: 3
2.0
)
S1-G
-G
C06 (dol: 30.2)
CX
O
OS
C
AM
1
CX
O
OS
S
AT
S
EG
A
20°
0°
Medium to coarse SAND oversubcropping HARDGROUND
Very soft CLAY overSAND/GRAVEL
Very soft CLAY overSAND/GRAVEL
Limited signalpenetration due toHARDGROUND andvery steep slopes
PotentiallyHARDGROUND /weathered ROCK
PotentiallyHARDGROUND /weathered ROCK
Sediment (potentially SAND/GRAVEL)S1
-G
-G
C0
6A
(d
ol: 3
2.0
)
S1
-G
-G
C0
6 (d
ol: 3
0.2
)
S1
-G
-G
C0
1 (d
ol: 2
4.5
)
S1
-A
-G
S0
1 (d
ol: 7
1.0
)
Subcropping ROCK
CX
O
OS
S
AT
S
EG
A
3°
20°
<0.5 m medium SANDover subcropping ROCK
<1.0 m medium SANDover subcropping
HARDGROUND
Medium to coarse SAND oversubcropping HARDGROUND
Very soft CLAY overSAND/GRAVEL
Limited signalpenetration due toHARDGROUND andvery steep slopes
HARDGROUND
ROCK
Sediment (potentially SAND/GRAVEL)
S1
-S
E-B
P0
1 (d
ol: 3
8.6
)
S1
-S
E-B
P0
2 (d
ol: 3
2.5
)
S1
-S
E-B
P0
3 (d
ol: 2
2.7
)
S1
-S
E-B
P0
4 (d
ol: -8
.2
)
S1
-G
-G
C0
1 (d
ol: 2
4.5
)
S1
-A
-G
S0
1 (d
ol: 7
1.0
)
S1
-A
-G
S0
2 (d
ol: 4
6.2
)
S1
-A
-G
S0
3 (d
ol: 2
2.6
)
Subcropping ROCK
Scale 8649.997616 at mid-latitude of chart
File Name: EQU_S1_AS-001_10k
NATURAL SCALE 1 : 10 000 AT 25°N
(KP 0.000 to KP 4.794)
ALIGNMENT CHART NO. 001 OF 010
1000m0 600400200 800
PRT
BMH SESIMBRA
001002
003004
005006
007008
009010
S 1
South Atlantic
Ocean
AFRICA
EUROPE
Saint Helena
North Atlantic
Ocean
Current Chart
ROUTE
BASED UPON:
Project Name:
Document Title:
This document may only be used for the purpose for which it was commissioned and in accordance with the terms of engagement
for that commission. Unauthorised use of this document in any form whatsoever is undertaken entirely at the user's risk.
Contractor :
Scale :
Surveyor :
GENERAL NOTES:
Inverse Flattening (1/f):
Datum:
Semi-Major Axis:
Projection:
GEODETIC PARAMETERS:
(Up to IRD 1/f=298.257 224)
298.257 223 563
WGS84
6 378 137.000 m
Mercator
GENERAL NOTES:
The criteria used for interpretation and descriptions are presented in the Survey Report.
Bathymetry & Tide:
Descriptive Terms and Definitions:
Survey Vessel :
Navigation Systems :
Underwater Pos. Systems :
Motion Sensor :
Bathymetry :
Seabed Feature / SBP :
Magnetometer :
CHART COMMENTS:
Cable Route Survey
EQUIANO
Longitude of Origin :
False Easting :
False Northing :
Scale Factor :
25° W
0 m
1 000 000 m
25° N
1
FGMG No.: 210-19-675
6°
Downslope gradient in degrees (°) as
measured over the shortest significant
distance
3
0
Approximate limit of swath
bathymetry coverage
(shown only in areas of flat seabed)
BATHYMETRY
CARTOGRAPHIC SYMBOLS
Post survey route with kilometre
post and reverse kilometre post
Telecommunications cable position,
In-service/Out-of-service/Planned
(As found in magenta)
Pipeline position,
In-service/Out-of-service/Planned
(As found in magenta)
Power cable position,
In-service/Out-of-service/Planned
(As found in magenta)
KP
KPR
Submerged wreck / Exposed wreck / Obstruction / Well / Platform / Explosives dumping ground
and symbol or line feature in grey, plotted from desk top study (as-found in magenta).
(for general symbols and abbreviations refer to British Admiralty Chart)
SEABED FEATURES AND SHALLOW GEOLOGY
fs/cs/vcs
Very coarse sediment
(COBBLES and BOULDERS)
Subcropping ROCK with predominant
sediment classification
(sediment thickness < target burial depth)
Fine sediment
(predominantly CLAY/SILT)
Coarse sediment
(SAND and GRAVEL)
cor
Boulders with predominant sediment
classification
Coral
Lo
ose
S
ed
im
en
ts
Ro
ck
r
fs/cs/vcs
vcs
fs
cs
hs
Gas seepage area with predominant
sediment classification
fs/cs/vcs
HARDGROUND (very dense/very stiff/
consolidated sediments;
sediment thickness < target burial depth)
Approximate limit of
side scan sonar coverage
Sediment or feature boundary
ROCK outcrop
(with veneer of sediments)
Seabed scar or trawl scar
Small outcrop of rock with height in
metres if discernible
Seabed depression or pockmark with
diameter (d) and depth (D) in metres,
where discernible
General orientation of sandwave crest
(Hachures on lee side where observable,
with wavelength and height in metres)
Orientation of megaripple crest
(Hachures on lee side where observable,
with wavelength and height in metres)
Orientation of sediment ribbon
Fault with depth below seafloor
(Hachures on footwall)
Located wreck with reference no.
(length x width x height in metres where
measurable)
-25
Inferred sediment or
feature boundary
4/0.8
50/3
CPT location with reference number
CP001
0.5
d/D
S001
20x10x7
Anchor scar
Bathymetric contours in metres.
Contour interval may be reduced
to aid in clarity.
GC001
Isolated sonar contact with reference no.
(length x width x height in metres where
measurable; nmh = no measurable height)
Linear sonar contact, dashed where
partially buried
50x0.5x1
Cable/Pipeline position, as determined
by magnetometer, with reference
number and amplitude in nanotesla (nT)
Unidentified magnetic anomaly with
reference number and amplitude in
nanotesla (nT)
5x3x0.8
S001
M002
12
M001
5
SHALLOW GEOLOGY PROFILE
Seabed profile
Major Reflectors
Cable/Pipeline
crossing
CX
/P
X
Seafloor slope angle
values in degrees
Alter course / Point on line /
Beach manhole (BMH)
Contractual route
Maritime boundariesCoastline (from Admiralty Charts)
Unknown cable
BMHACPOL
Chart matchline
10°
Seabed sample location with ref. no.:
GC (Gravity Core) PC (Piston Core)GS (Grab Sample) DS (Diver Sample)DP (Diver Probing) BP (Beach Probing)
Standard Parallel :
MV Fugro Gauss
Seapath 330+
Kongsberg HiPap 351
Seapath 330+ incl. MRU 5+
Kongsberg EM 122 / EM 712
EdgeTech 4200 / Knudsen 3260
G-882 AR/4
CHART LAYOUT PLAN ROUTE OVERVIEW PLAN
Fugro Germany Marine GmbH
REVISION 2
SEGMENT 1
Survey Date: December 2019
Depth in metres below seabed Depth in metres below seabed
ROUTE ENGINEERING - BURIAL ASSESSMENT
DescriptionCategory
FULL PLOUGH BURIAL - Full plough cable burial expected to target
REDUCED VARIABLE PLOUGH BURIAL - Target burial cover depth might not be achieveddue to seabed conditions. Reduced cable cover depth predicted > 0.5 m
POOR/VARIABLE PLOUGH BURIAL - Poor burial, to a predicted < 0.5 m cover depth
PLOUGH OVERBURIAL - Potential Cable overburial
CONTRACT SPECIFIC BURIAL - Cable burial to a specific target cover depth
UNPLOUGHABLE, Not ploughable, due to seabed conditions or route design criteria
A
B
C
D
E
F
RelativeDensity
UndrainedShear Strength
SedimentType Sediment DescriptionStrength / Density Description
IIIIIIIVVVIVll
<2020 - 4040 - 75
75 - 150150 - 300
>300---
<1515 - 3535 - 6565 - 8585 - 95>95---
Typically, very loose SAND/SILT, or very soft CLAY/SILTTypically, loose SAND/SILT, or soft CLAY/SILTTypically, medium dense SAND/SILT, or firm SILT/CLAYTypically, dense SAND/SILT, or stiff SILT/CLAYTypically, very dense SAND/SILT, or very stiff CLAY/SILTWeathered bedrock or indurated sediment (partially cemented)Rock
very soft / very loosesoft / loosefirm / medium densestiff / densevery stiff / very denseweathered bedrock / indurated sedimentRock
Seabed Type Classification for Burial AssessmentBurial Categories
Extent of Burial Category and Risk
Target Burial Depth
Installation Risk Assessment (IRA) Categories
Category
1
2
3
4
Description
PLOUGHABLE / PLB ATTEMPT:No significant risk to the burial equipment due to seabed conditionsCHANGE IN BURIAL CONDITIONS (CBC):Change in seabed texture and/or topography. A plough/PLB attempt will be madeand feasible burial (>0.5m) anticipated although target burial may not be reached.RISK OF NON-BURIAL (RNB).Moderate risk of damage to the cable and/or burial equipment due to seabed conditions;potential damage repairable onboard, using shipboard spares. A plough/PLB attempt willbe made although there is a Risk of Non-Burial (Surface Lay) or burial to <0.5m.SURFACE LAY / UNPLOUGHABLE / NO PLB ATTEMPT:High risk of damage to the cable and/or burial equipment due to seabed conditions;potential severe damage not repairable onboard using shipboard spares.
low risk
moderate risk
significant risk
high risk
Note:
For BAS sections with coloured marker please refer to BAS report Appendix A:"EQUIANO_S1_APPENDIX A-BURIAL ASSESSMENT SURVEY REV02_PSR12.xlsx"BAS information is not displayed within these sections due to limited space
BATHYMETRY PANEL
SEABED FEATURE PANEL
SEABED PROFILE AND GEOLOGICAL INFORMATION PANEL
DEPTHS IN METRES BELOW LAT
VERTICAL SCALE = 500
VERTICAL EXAGGERATION = 20
EQUIANO_S1_BMH SESIMBRA TO
BU MAD_PSR12_14-JAN-20.xls
Depths in metres, reduced to Lowest Astronomical Tide (LAT).
BMH Sesimbra to BU MAD
CHART COMMENTS:
Cable and Pipeline Crossings:
CX IS FO SAT 3 SEG 22 (database), KP: 0.243, water depth: onshore, crossing angle: 38°
CX IS FO BUGIO (database), KP 0.245, water depth: onshore, crossing angle: 52°
CX IS FO SEA-ME-WE 3 SEG 8.11 (database) , KP: 0.252, water depth: onshore, crossing angle: 34°
CX OOS FO Eurafrica SEG E1 (database), KP: 0.258, water depth: onshore, crossing angle: 38°
CX OOS FO Eurafrica SEG E2 (database), KP: 0.276, water depth: onshore, crossing angle: 15°
CX OOS COAX SAT SEG A (RPL/database), KP: 0.618, water depth: 9 m, crossing angle: 12°
CX OOS COAX SAT SEG A (RPL/database), KP: 2.259, water depth: 92 m, crossing angle: 88°
CX OOS COAX CAM 1 (RPL/database), KP: 2.570, water depth: 97 m, crossing angle: 21°
Hazards/Remarks:
In the northern charted inshore area, the route enters seabed comprising medium SAND overlying subcropping ROCK
with megaripples, coast parallel sediment structures (0.4 m in height) and isolated boulders. Towards the southeast, the
route crosses areas of outcropping ROCK and areas of medium SAND overlying subcropping HARDGROUND with
isolated boulders. The central area is dominated by very soft CLAY over SAND/GRAVEL to very loose to medium dense
SAND in the southern part. These sediments are overlying subcropping HARDGROUND (very dense to cemented
SAND) in the southernmost area. Slopes are in general very gentle, except when crossing a local slope edge, where
slopes are moderate. Several converging cables and potential cable debris are observed in the magnetometer and
sidescan sonar data near the landing point.
Rev Date
Prepared by Approved byChecked by
0.0 20.12.2019AB RYOV
1.0 RMJ / IE BWKS07.02.2020
2.0 BWKS06.03.2020 RMJ / IE
MV Alumaster
POS MV WAVEMASTER
--
POS MV WAVEMASTER
EdgeTech 6205
EdgeTech 6205 / Innomar SES2000 compact
G-882 AR/4
0.0000.5001.0001.5002.000
40
20
0
-20
-40
-60
-80
-100
-120
-140
40
20
0
-20
-40
-60
-80
-100
-120
-140
1.5002.0002.5003.000
20
0
-20
-40
-60
-80
-100
-120
-140
-160
20
0
-20
-40
-60
-80
-100
-120
-140
-160
2.5003.0003.500
-40
-60
-80
-100
-120
-140
-160
-180
-200
-220
-40
-60
-80
-100
-120
-140
-160
-180
-200
-220
3.5004.0004.500
-40
-60
-80
-100
-120
-140
-160
-180
-200
-220
-40
-60
-80
-100
-120
-140
-160
-180
-200
-220
0.0000.2500.5000.7501.0001.2501.5001.7502.0000
-0.2
-0.4
-0.6
-0.8
-1
-1.2
-1.4
-1.6
-1.8
0
-0.2
-0.4
-0.6
-0.8
-1
-1.2
-1.4
-1.6
-1.8
1.5001.7502.0002.2502.5002.7503.0000
-0.2
-0.4
-0.6
-0.8
-1
-1.2
-1.4
-1.6
-1.8
0
-0.2
-0.4
-0.6
-0.8
-1
-1.2
-1.4
-1.6
-1.8
2.5002.7503.0003.2503.5003.7500
-0.2
-0.4
-0.6
-0.8
-1
-1.2
-1.4
-1.6
-1.8
0
-0.2
-0.4
-0.6
-0.8
-1
-1.2
-1.4
-1.6
-1.8
3.2503.5003.7504.0004.2504.5004.7500
-0.2
-0.4
-0.6
-0.8
-1
-1.2
-1.4
-1.6
-1.8
0
-0.2
-0.4
-0.6
-0.8
-1
-1.2
-1.4
-1.6
-1.8