Opinion
In this action for declaratory relief between two insurance carriers we confront yet another dispute whose origin may be traced to
State Farm Mut. Auto. Ins. Co.
v.
Partridge
(1973)
Facts
On July 27, 1979, Louise Diepenbrock (Diepenbrock) and other students attending a Jesuit High School summer session were on an outing at Folsom Lake. They were passengers on a 1978 Sea Ray boat owned and operated by Daly, a parent of one of the students. In addition to Daly, the students were accompanied by Michael Mclntee and Michael Melanson, both teachers at Jesuit.
In the afternoon the Sea Ray was in the middle of the lake; the engine was turned off and the boat still. Diepenbrock inquired whether there was time for a final swim, and Daly replied there was. Diepenbrock dove from the Sea Ray. When she surfaced from her dive she was run over by a boat operated by Mclntee towing Melanson on water skis. As a result of the accident, Diepenbrock suffered severe and permanent injuries.
Diepenbrock filed suit in Sacramento Superior Court, naming Daly as a defendant in the action. Two theories of liability were asserted against Daly. The first was negligent maintenance and operation of the Sea Ray. The second theory of liability, with which this appeal is concernеd, alleged Daly negligently supervised and controlled Diepenbrock in allowing her to dive from the Sea Ray into the lake.
Ohio Casualty Insurance Company (Ohio Casualty) had issued a yacht policy to Daly covering the Sea Ray. Both the yacht policy and Daly’s homeowner’s policy had liability limits of $300,000. Both policies were in effect on the date of the accident.
Pursuant to the terms of its policy, Ohio Casualty provided Daly a defense in the Diepenbrock litigation. During the course of that litigation, Ohio Casualty notified Hartford of the pending litigation, and advised Hartford of Ohio Casualty’s oрinion that Hartford had obligations of its own to Daly under the homeowner’s policy. Hartford refused, however, to provide Daly a defense or any coverage whatsoever for Diepenbrock’s claims.
Ohio Casualty paid its policy limits to Diepenbrock in exchange for the dismissal of Daly frоm the lawsuit. Ohio Casualty then filed this declaratory *644 relief action against Hartford, seeking reimbursement for one-half the cost of defending Daly and securing his release from the Diepenbrock suit.
Both Hartford and Ohio Casualty moved for summary judgment. Hartford asserted it owed Daly neither a defense nor indemnity for any claim arising from the boating accident, relying on a provision in the homeowner’s policy which excluded coverage for bodily injury arising out of the use or operation of a watercraft. Ohio Casualty sought summary judgment on the theory the settlement with Diepenbrock was based solely on Daly’s alleged negligence in supervising Diepenbrock’s swimming and diving activities, a basis of liability not within the exclusionary clause. The trial court agreed with Hartford and found the watercraft exclusion applicable. Ohio Casualty appeals from the ensuing judgment.
Discussion
The parties agree, and the trial court so found, that the facts of this case are undisputed. Accordingly, the interpretation of the exclusionary clause in Hartford’s policy is a question of law upon which we must make our own independent determination.
(Hartford Fire Insurance Co.
v.
Superior Court
(1983)
Under the coverage clause of Hartford’s policy, it agreed to pay on behalf of Daly “all sums whiсh the Insured shall become legally obligated to pay as damages because of bodily injury or property damage, . . . caused by an occurrence.” “Occurrence” is broadly defined as “an accident, . . . which results, ... in bodily injury or property damage.” The policy further provides in bold print “Exclusions” as follows: “This policy does not apply: . . . [1f] a. to bodily injury or property damage arising out of the ownership, maintenance, operation, use, loading or unloading of: . . . any watercraft: [1] (1) owned by or rented to any Insured if the watercraft has inboard or inboard-outboard motor powеr of more than 50 horsepower or is a sailing vessel . . . .”
Neither party has cited this court to any cases construing such an exclusion for watercraft-related activities. There are, however, a plethora of cases considering the analogous situation wherein a homeowner’s policy excludes coverage for automobile-related accidents. We consider it appropri
*645
ate to look to those cases for guidance. (See
Transport Indemnity Co.
v.
Schnack
(1982)
The fundamental principle upon which this case turns was set out in
State Farm Mut. Auto. Ins.
v.
Partridge, supra,
Ohio Casualty contends this case is analogous to Partridge. They urge Daly was sued on two theories. The first was that Daly “ ‘negligently and unlawfully entrusted, maintained, controlled and оperated said vessels on said river . . . ’ ” While this negligent act may have been excluded by the Hartford policy, Ohio Casualty relies on the second theory of liability asserted against Daly, that he “ ‘negligently supervised, directed and managed said bathing and recreational activities as to proximately cause the vessel operаted by . . . McIntee ... to strike and run over [Diepenbrock] . . . .’” (Italics added.) Ohio Casualty urges this negligent supervision was a separate and independent cause of the accident, unrelated to Daly’s use of the boat. We agree.
The present case is distinguishable from those progeny of
Partridge
wherein a negligent use of the excluded instrumentality was the cause of the injury. In
State Farm Fire & Cas. Co.
v.
Camara
(1976)
In the present case, however, the excluded instrumentality did not play an active role in causing the injury. The only “use” of the boat was to transport Diepenbrock and Daly to the scene of the accident. Once there, the boat’s engine was turnedoff and it became nоthing more than a floating dock or platform. The alleged negligent act was not simply using this platform for diving, because the dive itself did not cause the injury; rather, it was Daly’s alleged negligence in failing to survey the surrounding area and in permitting Diepenbrock to enter the water when Mclntee’s boat was, from all appearances, dangerously near. Such negligence on Daly’s part was not in any way dependent on the use of the boat before liability would arise. His liability for his acts would be unaffected whether the acts occurred on a boat, a pier or on the shore. That they occurred on the boat is fortuitous. For example, if the facts of this case were unchanged, except that Daly and Diepenbrock had been standing on the shore of the lake when the ill-advised permission to swim was granted, the insurer could not contest that the resultant damage would be covered by the homeowner’s policy. (See
State Farm Mut. Auto. Ins. Co.
v.
Partridge, supra,
National Indemnity Co.
v.
Famers Home Mutual Ins. Co.
(1979)
The basis of the decision in National Indemnity was the trial court’s factual finding that the injury occurred when the child “ ‘had not yet completed alighting from the vehicle . . . (Id., at p. 105.) The vehicle exclusion in the homeowner’s policy in that case was for “ ‘bodily injury . . . arising out of the ownership, maintenance, operation, use, loading or unloading of any motor vehicle owned or operated by . . . the insured. . . .”’ (Id., at p. 106; italics added.) The court concluded that negligence in supervising the unloading of the car could not be dissociated from the use of the vehicle. (Id., at pp. 108-109.) Given the factual finding in National Indemnity, this reasoning is sound. Since the loading and unloading of passengers is itself a “use” of the vehicle, the only way liability can arise from such loading or unloading is through the “use” of the vehicle. The covered risk (negligent supervision of unloading) is therefore dependent upon the excluded risk (use of the vehicle). The result in National Indemnity proceeds from, and relies on, the analysis in Camara. (Id., at pp. 108-109.) Accordingly, the present case is distinguishable from National Indemnity for the same reason it is distinguishable from Camara.
Daly’s negligence was not an act оf omission in failing to supervise some aspect of the operation of the boat, such as loading or unloading, but was an act of commission in permitting Diepenbrock to go swimming when it was unsafe to do so. Unlike National Indemnity, the negligent supervision of Diepenbrock’s swimming activities did not in itself constitute a use of thе boat. The trial court specifically found “[tjhere is no relationship between the boat itself and the act causing the injury, except that it was the situs of Daly’s act or omission . . . .” Since the facts in the present case reveal that Daly was negligent in a respect other than supervising some use of the excluded instrumentality (i.e. unloading), National Indemnity is in-apposite. 1 Thе trap into which both Hartford and the trial court fell is that the mere fact Daly’s negligent act is connected to the use of the boat does not mean it is dependent on the use of the boat. In National Indemnity, no liability for negligently supervising the unloading of the vehicle could arise *648 without a use of the vehicle. Here, liability for negligently supervising a swimmer can (and did) arise without any use of the excluded watercraft. 2
We have concluded that Daly’s negligent supervision of Diepenbrock’s swimming was separate and independent of any use of the excluded watercraft because there were many ways and places such conduct could have given rise to liability without use of the boat, even though in the instant еase it was a use of the boat which actually placed the victim in the position which led to the injury. In
State Farm Fire & Cas. Co.
v.
Kohl
(1982)
Similarly, Hartford may not rely on the fact a watercraft was used to place the victim at the scene of the accident to avoid its agreement to insure Daly against nonwatercraft-related risks. Daly’s negligence in supervising Diepenbrock’s swimming activities was such a covered risk. The trial court erred in relieving Hartford of its obligation merely because the negligence occurred while Daly was on a boat.
The judgment is reversed.
Blease, Acting P. J., and Sims, J., concurred.
A petition for a rehearing was denied November 30, 1983, and respondent’s petition for a hearing by the Supreme Cоurt was denied February 16,
Notes
That Daly’s alleged negligence involved something other than the “loading or unloading” of the boat is critical because the instant exclusion, just as in National Indemnity, precluded coverage for “bodily injury . . . arising out of the ownership, maintenance, operation, use, loading or unloading of . . . any watercraft. ” (Italics added.)
It follows from our conclusion that the unloading of a vehicle is dependent upon a use of the vehicle, that negligence in loading or supervising the loading of a vehicle is also dependent upon a use of the vehicle. For this reason,
Allstate Insurance Co.
v.
Jones
(1983)
