Compare an externally selected scope's total-rode target with verified marked rode without recommending scope or anchorage.
A quick decision brief for this specific tool
Current water depth, actual bow attachment height, externally selected scope ratio and verified marked total rode available
Entered vertical distance, total-rode target and marked-rode gap or surplus
Checks only entered total-rode arithmetic; it does not choose scope, chain/rope mix, anchor, anchorage, swing circle or safe conditions
Choose your path
Reconcile an externally selected scope ratio with current depth, bow attachment height and marked total rode without recommending a scope or anchorage.
Convert an externally selected scope into a transparent total-rode target.
Enter current water depth, actual bow attachment height, selected scope and verified marked rode available.
Sees a rode gap/surplus without confusing total rode with chain length.
Keep bottom, hazards, traffic, swing room, tide/current and forecast outside static arithmetic.
Verify official products and manufacturer/vessel guidance before choosing the entered scope.
Does not infer holding power or anchorage clearance from the result.
Treat deployment as a monitored operation.
Set/test the anchor, inspect snubber/chafe/markings and monitor position/conditions.
Is ready to reset or leave rather than relying on an entered surplus.
Outputs and checklists are planning aids. Review the linked current authorities and the records, terms, instructions, and requirements that apply to your exact situation before a consequential decision.
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Entered current water depth and actual bow attachment height form the vertical distance; multiplying by the externally selected scope ratio gives an entered total-rode target.
The target is compared with verified deployable marked total rode. The result deliberately does not equate total rode with chain-only length or infer chain/rope composition.
The entered scope must come from actual vessel, anchor, rode, bottom, swing-room, weather/current and manufacturer guidance. The worksheet cannot assess holding or clearance.
Updated: August 2026
Compare a selected scope target with the deployable rode whose length markings have been physically verified.
Update current water depth and bow attachment height when tide, loading or anchoring position changes the vertical distance.
Document the entered scope and rode target alongside anchor/rode guidance, swing room, bottom, forecast and anchor-watch plan.
Treat the result as total rode for an externally selected scope. Verify chain/rope composition, condition, markings and anchor/vessel manufacturer guidance separately.
Verify current depth/tide, bottom, hazards, traffic, swing circle, weather/current and holding behavior; set/test the anchor and maintain an effective anchor watch.
Reconcile current vertical distance and an externally selected scope with marked total rode. The tool does not recommend scope, anchor gear, anchorage or unattended operation.
