Estimate cable-lay vessel days, burial workload, expected weather
downtime, cable-load campaigns, support-vessel costs, specialist spread
cost, fuel, port logistics and total marine installation cost. Advanced
mode models route segments with different lay rates, burial requirements
and weather operability.
Currency selector changes display only. No exchange-rate conversion is performed.
Vessel Days
Lay, burial, offshore fixed work, mobilization, loadout, reload and demobilization days
Weather Downtime
User-entered segment operability converted into expected standby days and weather cost
Installation Cost
Cable vessel, support craft, specialist spread, fuel, port campaigns and fixed project cost
Cable Route & Installation
Simple mode assumes one representative route segment with a single
lay rate, burial rate and weather-operability factor.
km
%
m/min
%
m/min
In-line mode uses the slower lay-or-burial process as the production bottleneck.
hours/day
working days
Pull-ins, joints, crossings, testing, route-specific handling or other offshore work.
Weather Operability
Enter the expected percentage of offshore calendar time that is
workable for this installation spread. No wave-height, wind-speed or
current threshold is assumed by the tool.
%
%
Optional planning contingency applied to calculated weather downtime.
Cable Loadout & Reload Campaigns
tonnes/km
tonnes
Enter 0 to ignore cable-capacity-driven reloads.
days
days
days/reload
days/reload
days
$
/load
Installation Vessel & Marine Spread
$
/day
% normal rate
vessels
$
/vessel/day
$
/offshore day
MT/day
MT/vessel/day
% normal burn
$
/MT
$
$
/installed km
Optional. Leave at 0 to analyze marine installation cost only.
Cable Route Segments
Use different lay rates, burial requirements and weather operability
for shallow water, offshore sections, crossings, landfall approaches
or other installation zones.
Segment
Route km
Slack %
Lay m/min
Burial %
Burial m/min
Operability %
Fixed Offshore Days
Shared Installation Assumptions
hours/day
%
Cable Loadout & Reload Campaigns
tonnes/km
tonnes
days
days
days/reload
days/reload
days
$
/load
Vessel, Spread & Fuel Economics
$
/day
% normal rate
vessels
$
/vessel/day
$
/offshore day
MT/day
MT/vessel/day
% normal burn
$
/MT
$
$
/installed km
Cable Installation & Weather Results
Single-route installation estimate
Enter project data
Enter cable route, installation, weather, vessel and cost assumptions
to estimate project duration, standby exposure and marine installation cost.
Total Marine Installation Cost
N/A
Vessel, support spread, fuel, port campaigns and entered fixed costs
Expected Project Duration
N/A
Offshore productive work, weather downtime and marine logistics
Route Length
N/A
Installed Cable Length
N/A
Cable Mass
N/A
Cable Load Campaigns
N/A
Offshore Working Days
N/A
Weather Downtime
N/A
Offshore Calendar Days
N/A
Logistics / Port Days
N/A
Weather Share of Project
N/A
Weather Downtime Cost
N/A
Installation Vessel Cost
N/A
Support Vessel Cost
N/A
Specialist Spread Cost
N/A
Marine Fuel Cost
N/A
Marine Cost per Route km
N/A
Effective Offshore Install Rate
N/A
Cable Supply Cost
N/A
Project Cost incl. Cable
N/A
Route Segment Results
Advanced mode
Segment
Route
Installed
Lay Hrs
Burial Hrs
Working Days
Weather Days
Calendar Days
Bottleneck
Installation Schedule
Cable Loadout & Vessel Utilization
Marine Cost Breakdown
Duration & Cost Sensitivity
Weather operability vs cable lay rate
Operability \ Lay Rate
-15%
Base
+15%
Model approach:
installed cable length equals route length plus entered slack allowance.
Lay hours equal installed cable length divided by lay rate. Burial hours
use route length × burial share divided by burial rate. In-line burial
uses the slower lay-or-burial process as the offshore production
bottleneck, while separate-pass burial adds both workloads. Expected
weather downtime is derived from entered operability and then increased
by the optional weather contingency uplift. Cable load campaigns are
calculated from installed cable mass and vessel capacity. Weather cost
applies the entered standby day-rate and standby fuel factors.
Planning estimate only.
Actual subsea cable installation duration and cost depend on route survey
results, geotechnical conditions, water depth, seabed mobility, boulders,
crossings, burial depth, trenching tool performance, cable properties,
tension limits, bend radius, vessel configuration, cable carousel capacity,
landfall method, pull-ins, joints, permits, fisheries restrictions,
environmental windows, port availability and project-specific marine
procedures. Weather operability should be derived from project-specific
metocean data and the actual vessel and equipment limits. This tool does
not determine safe operating limits or acceptable weather windows.
Day rates, standby rates, fuel treatment and mobilization terms vary by
charter and installation contract. Use project-specific engineering,
metocean analysis, supplier data and commercial quotations before making
contracting or investment decisions.
